Stan and Irene saw the danger as well and started up the boat. But it would be too late by the time they got there. The diver was swimming pretty fast and keeping well ahead of Harry, who was trying to paddle as fast as he could to save his best friend. Robby only saw one option for him, to swim towards the wave. That's what he started to do, but then his board fell out from under him. A whistle met his ear while a slippery back slipped between his legs.

"Kalea! Go boy!" The dolphin squeaked and took off like a bullet. Robby held on tight. Kalea was putting quite a bit of distance between them and the diver. Robby glanced back back every now and then. He was concerned the diver would change targets and go after Harry or the boat. Kalea then turned around and began swimming back towards the diver.

"Kalea! What are you doing?" shouted Stan. But neither Robby, Harry, or Irene said a word, they simply watched with bated breath but determined looks were on their faces. Kalea knew the danger and knew what he was doing. Robby trusted him. The diver seemed unsure of what to do at the sudden change in direction, but decided to take his chance and aimed the harpoon gun. He fired, and Kalea jumped, clear over the harpoon and the diver. Robby was prepared for the dive into the sea and held his breath. Harry cheered as the two came up for air and swam back towards the boat. Robby glanced back. The diver was swimming away.

"Man, that was close. Too close!" said Stan as he helped Robby back onto the boat. Harry climbed in after Robby.

"Are you alright?" asked Harry.

Robby nodded. "Yeah, I'm fine." He glanced out at the sea. "But I wonder if that diver was working for that pirate man."

"I wouldn't be surprised," mumbled Stan.

"But what I want to know is, how did he know we were coming out here today?" asked Harry. "He was ready and waiting for us!"

Irene's lips were pressed into a thin line. "I don't know, unless someone told them, or they have the lab bugged, or something like that."

Stan looked at her, blinking. "Say what? How could anyone have told them? We were the only ones who knew about this!"

"Someone could still have overheard us," said Irene matter-of-factly. "There were still people coming in and out of the museum and the lab yesterday."

"But that could mean it could have been anybody," said Harry. "Well, besides Robby's parents and Robby's grandfather. They obviously wouldn't want Robby in danger like this."

Irene waved her hand. "Right, right, of course. And you can eliminate my sisters too."

"Wait, so Ismene is your sister too?" asked Harry.

Irene shot him a look. "You're just now figuring this out?"

"Well, it's not like you properly introduced us or anything," said Harry with a shrug.

Irene sighed. "Fine, fine, you have a point."

"How many sisters do you have?"

"Just another sister, there's four of us total, Ilithyia, Ianthe, myself, and Ismene."

"Yeah, Dr. Cho mentioned her to us the other day when you and Ilithyia left early," remarked Harry. "Is she alright?"

"Um yes, yes she is, thank you."

"Great news, but that's besides the point," said Stan. "Who at the lab would talk to that pirate dude anyways? They're all trustworthy!"

Robby's face became pained. "Not unless they're using Jack Storm as leverage to get Maggie to eavesdrop on everything. How has she been these past few days?"

"Uh, like regular Maggie, taking diligent care of the dolphins and her work." Stan shrugged. "I mean, it's definitely a more plausible angle, but she doesn't act any different than she normally does."

"But she could be acting that way so we wouldn't suspect her," pointed out Irene softly.

Stan sighed. "But then she technically is our only suspect, at least in concern with the attacks on Robby. And it's just to protect Jack."

"And maybe whatever he was searching for," said Robby.

"Don't you mean the treasure?" said Irene.

"There's still the possibility that he's looking for something else," said Robby softly. He and Harry watched her face. There was a slight passing moment of panic on her face before it was gone, like it had never happened.

"But what else could there be?" she asked tersely.

"Yeah, what else could there be? There's nothing else really important about Devil's Hat besides the treasure and the surfing," remarked Stan. "And no matter how many times we've said that, you keep talking like there's something else to find at Devil's Hat."

"Well, Grandpa did mention mermaids," began Robby.

Stan burst out laughing. "Mermaids? Seriously? There's no such thing! We would have seen them for sure if they were real." He nudged Irene. "Can you believe this guy? Mermaids, ha ha!"

Irene sighed and shook her head. "Those are just stories, Robby, nothing more."

"Yeah, right," said Robby with a quick smile. But he shared a quick glance with Harry. Those weren't the stories she told them.

"Besides, we've already established this guy looks like a pirate, and pirates go after treasure. So, he 's got to be looking for the Hawaiian Heist." Stan's face fell a little. "Though, that would mean Jack was looking for it too and probably was captured by this guy. In which case that pirate could have forced Maggie to tell him everything we are planning to do, when, and where or else he could kill Jack."

Irene shrugged. "It is the most likely solution at this moment, with all the information we have and everything that has happened so far." She glanced at Robby. "Especially to you. You were the only one who got a good look at this guy."

"She has a good point," said Harry. He glanced at his best friend. "You do realize what this means, right?"

Stan and Irene looked back and forth between the two. "What?"

Robby sighed. "We need to tell Mr. Lillibulero. Looks like I can't keep out of trouble for long."

"And that's not all," said Harry. Everyone glanced at him in expectancy. "That pirate won't let us have any fun until it's been solved." That got a chuckle out of everyone.

"True, true, well Harry, guess we just have to solve this mystery so you can catch those waves."

"Then let's get cracking, the summer's not going to last forever."

Stan scoffed. "Too true."

Irene shrugged. "Well then, guess we're heading back to ICS."

"Yup," said Robby. He glanced at Stan. "Sorry about your surfboard, though."

Stan waved his hand. "You're fine. It should still be there. I'll come back later and get it."

"Are you sure?"

"Yeah, no biggie." A loud squeaking interrupted them. The four looked over the side and gasped. Kalea was pushing the surfboard towards the boat. "Whoa, great job, Kalea!" shouted Stan. Harry was over the side, hoisting up the surfboard. Robby and Irene helped pull it onto the boat. "Kalea, you're the absolute best!" Kalea squeaked before jumping back into the ocean.

"Alright, now we have everything," siad Irene. "Let's get back to ICS."

Stan grinned. "Roger that!" He jumped into the driver's seat and started up the boat. With Kalea keeping up alongside them, they raced back to the lab.

Robby and Harry helped Stan moor the boat and get the surfboards into his Jeep before taking off in search of Robby's family. They met up with the Marshall sisters on their way over. Ilithiya asked Stan and Irene to help her with Poipu, leaving Robby and Harry to continue the search. They found them in a lab with Dr. Cho and Maggie. Robby shot a glance at Harry. They needed to talk to Maggie, but not at that moment. First, they had to report on what had happened.

"Back already?" asked James.

"What happened?" asked Miriam.

"Well, simply put, Robby stayed out of as much trouble as he could," said Harry, "but trouble just wouldn't leave him alone." They took turns telling them the details of the horrowing incident.

Miriam's eyes widened as she pulled her only child close. "My goodness!"

"Thank God for Kalea!" said Jacob.

James's face grew taut. "I'd better call Lillibulero and let him know. He's bound to be here soon either way, but I'd better let him know, all the same." He turned to Jacob. "May I use your office again?"

Jacob nodded. "Go for it."

"Thanks." James walked into Jacob's office and closed the door. Robby watched with concern.

"Why does he need to use the office?" asked Maggie. The others glanced at her. "He could have done it here."

Miriam smiled at her. "Oh, sorry dear, but you don't know. Lillibulero is a friend of the family, yes, but he does work for the International Bureau of Police and his number must be kept secret. James takes every precaution to ensure that it stays secret."

"Oh," said Maggie.

"Well, since it seems that you can't leave ICS or the bungalow without getting into danger," said Jacob, "it only makes sense that you only stay at the bungalow and here. At least, until Mr. Lillibulero arrives."

Robby sighed. "I figured as much."

"See, I told you, can't have any fun until the mystery is solved," quipped Harry.

"Well then, guess you'll just have to help Irene and Stan get all the chores done while Mr. Lillibulero solves the mystery," said Jacob with a shrug. The two groaned.

"Isn't there anything else we can do?" asked Harry.

Jacob thought a moment before shaking his head. "Nope. Now if you'll excuse me, I have to pick up these files."

"Let me help you, Dad," said Miriam, picking up a box.

Jacob smiled. "Thanks, Miriam." The two left. Dr. Cho then left as well to make some calls.

Robby saw his chance, and took it. "Maggie, wait!"

She turned and glanced at the two boys, blinking. "Uh, yeah?"

Robby let out a breath. "What was Jack Storm looking for?"

Maggie's eyes narrowed. "That's none of your business."

Harry stepped forward. "Maggie, Robby's being chased because of some guy he saw once. If Jack disappeared because he saw him too, then looking for the same thing might help us find Jack faster."

"Besides," said Robby, "we're on the same team, right? We all want to get Jack home safe and sound."

Maggie glanced between the two. "You have a point."

"Then, you'll tell us?" asked Harry when she went quiet for a moment.

Maggie shook her head. "I, I can't. I promised Jack I wouldn't. He wanted to keep it quiet."

"He's looking for the Hawaiian Heist, isn't he?" asked Robby. Maggie's eyes widened for a moment before she glanced to the side. Robby took that to mean he hit the mark. "But he's not looking to get rich off it either, right? Is he looking to help get the treasure seekers away from ICS so you can turn it into a conservation site faster?"

Maggie blinked. "Uh, well . . . I didn't think you had thought of any other reason for searching for the treasure besides getting rich."

Robby smiled. "Well, it had to cross my mind. My grandpa didn't think Jack would look for it for the wealth. He told us Jack liked working with the dolphins a lot."

Maggie smiled warmly. "Yeah, yeah, he did. He really enjoyed it." She let out a sigh. "And he really wanted to meet your parents too. Of course he had to go and get captured."

"Well, we've got the rest of the summer to find him and get this mystery solved," quipped Harry. "And I don't know about you, but I do not want to wait until the last day of our vacation before getting in some good surfing."

Robby chuckled. "Looks like we've got some searching to do." He paused and blinked before turning to Maggie. "Speaking of, the neighbors said it looked like Jack would leave his house with ICS equipment. He was using that to search?"

Maggie shrugged. "I guess he figured if he could use that as a cover, then no one would find out what he was really doing." Maggie sighed. "I guess it didn't work too well."

"No, it still could have," said Harry. He stuck his thumb at Robby. "Robby just took one look at the guy and now he's after his life. He hasn't sent anyone to kill anyone else. It could have been the same thing with Jack."

Maggie paled. "Which could mean he's dead already!"

"Wait wait! Not unless he's looking for the treasure too. If Jack knew where he had searched, he could be kept alive for that information," Harry quickly said.

"But then, once he's given all the information he has, what then?" asked Maggie. She looked like she was about to start crying. "What then?"

Robby placed his hands on her shoulders. "Then I hope he was smart enough to pace his information so he could stay alive longer and try to escape, or at least try to get a messge out to us." He titled his head slightly. "But, you only just now thought of the possibility that he could be dead. You think he could still be alive?"

"It's a hope that I've had for a while, this feeling that he is alive . . ."

"Then it's possible he could still be alive," said Harry. "I'm sorry for making you think otherwise."

Maggie shook her head. "It's fine, it's a possibility I've been trying to avoid, but it's one I should prepare for, should he be in fact dead." Harry shot a glance at Robby. That answered that question, Maggie wasn't spying on them to keep him alive, not if she had no clue if Jack was alive or not.

"Well, I hope the police find something soon because . . ." began Harry.

"Robby! Harry!" James walked into the room. "I just got off the phone with Lillibulero with some specific instructions. He wants you two to pick him up at Jack Storm's house . . ."

"Why is he going to Jack's house?" asked Maggie.

James held up his hand. "He has his ways, he probably wants to check out Jack's house to see if he can find something himself. You never know what a different pair of eyes will see. After that, he wants you to take him to both Uncle Billy's and Kailoa's." James huffed. "He didn't exactly say, but by the sounds of it, he might be taking over the investigation."

"He found out something about our mystery guy?" asked Robby hopefully.

"He didn't say," replied James, "and he hasn't sent over any information via fax. They could still be looking into it. I think Lillibulero thought it best that he get over here as quickly as possible." He glanced at his watch. "And I think he's planning on getting at Jack's around the same time you do, so you had best get over there now." He pulled out his keys and handed them to Robby. "And be sure to give the keys to Lillibulero once you see him. You know how he is about being the one to drive."

Robby chuckled nervously. "Boy do I ever." He turned to Harry. "Guess we had better get going then." He turned back to Maggie. "Thanks for talking to us."

Maggie smiled. "Anytime."

James glanced between them quizzically. "What were you talking about?"

"You know, we shouldn't keep Mr. Lillibulero waiting. We'll see you later, Dad!" Robby waved and dashed off, followed by Harry. They nearly ran into Irene on their way out the door.

"Whoa! Where are you two off in such a hurry?"

"Mr. Lillibulero is coming!" exclaimed Robby "We're supposed to meet him at Jack's house."

Irene blinked. "Why Jack's house?"

"Mr. Hoenig thinks he's taking over the investigation," Harry quickly explained as they dashed out to the Hoenig's rental Jeep.

"Oh, well, I'm coming with you," said Irene.

"Then get in," said Robby as he put the keys into the ignition. Irene jumped into the back and buckled right as Robby turned it on. They pulled out of the driveway and sped towards Jack Storm's house.

"Why is he asking you to pick him up at Jack's house?" asked Irene.

Harry turned towards her and shot her a sheepish grin. "He's parachuting down there. It's how Mr. Lillibulero does things."

Her mouth dropped. "He parachutes?"

Robby shrugged. "Like Harry said, it's just how he does things. He's done it every single time he's in."

"This Lillbulero guy sounds rather odd."

Harry chuckled nervously. "You have no idea, but he's great at what he does."

Robby nodded. "And he's dependable, which is great considering we have no clue who we're up against." The two then told Irene about their discussion with Maggie.

"So she doesn't even know what's going to happen to Jack," she muttered.

"Yeah, poor girl. I do hope we find him alive and unharmed, just so they can be together again," said Harry.

"Wait, what do you mean by we?"

Roby sighed. "I'll probably have to be the bait to lure this guy out so Mr. Lillibulero can nab him. And Harry always jumps into these situations head first with me." He shot a smile at Harry.

Harry chuckled as he punched Robby's shoulder playfully. "Dude, that's what best friends do."

Robby scoffed and rolled his eyes. "No duh, you and Balthazar have done it plenty of times."

"And we'll just keep on doing it, so if you're getting tired of it, too bad, we're not going to be stopping any time soon," quipped Harry. The two laughed. The two then glanced in the rearview mirror at Irene and noticed her crestfallen face.

Harry turned in his seat and looked at her with concern. "Hey Irene, you alright?"

Her head snaped up in surprise before shooting them a quick smile. "Uh, yeah, yeah, I'm fine. Just worried about this whole thing. Seems to be getting worse if your friend from the IBP has to come in and take over."

Harry and Robby shot each other a look. They knew that wasn't the real reason. Did Irene not have any close friends? But they figured it best not to mention it and went with her explanation. "Yeah, it does seem like that, "asid Robby. "But with Mr. Lillibulero on the job, it will be over real quick."

"Like, by the end of the week, real quick," added Harry.

Irene smiled with relief. "That is good to know." There the conversation had to end as they were pulling into Jack Storm's driveway. The three quickly got out and entered Jack's house.

"Mr. Lillibulero?" Robby said when they entered the house. There was no answer.

"Could, could he have been captured as well?" asked Irene.

Harry scoffed. "Only if he wanted them to."

"Could it be we got here before him?" said Robby. "That would be a first."

"That, or he's in the backyard putting away his parachute."

Robby pointed at Harry. "That's most likely it." He led the way to the backyard. The three stepped out onto the lawn and looked around.

"There's no one here," said Irene.

Robby cupped his hands around his mouth and shouted. "Mr. Lillibulero!" They heard a rustling. Startled, they huddled together.

"Is, is that him?" asked Irene.

"I, I think so," replied Robby. "Must be just getting his parachute picked up."

Harry nodded. "Yeah, yeah, that's got to be it." The rustling stopped and a very short man, about five feet tall, stepped out from behind the tree. He was wearing a grey and green skydiving jumpsuit with a matching helmet. His hand reached up to his helmet and began to take it off.

Irene pointed and let out a shrill scream. "Menehune!"

(Author's Note: And we're back! With this chapter, we're officially halfway in this book! Woohoo! And while I wished I had written more during this break, I'm happy with how much I did get done. I did get the next five chapters done, so I'm working on chapter 16 for each of them. So happy! But then again, I did have to figure out how these next few chapters were going to go, only had a few scenes had to build around them and connect them, lol. So I had to figure out how to do that. But, like I said, I still got quite a bit done! Woohoo! And depending on how things roll with the 16th chapter of the other four books, I might end up just posting all of them on one day this week. Only 25 chapters left to write! And I really, really want to hurry it up, been dreaming about my OC Matthew. He's itching for his own series to start, lol. I'm itching to get started on it too. Can't wait! Hopefully I'll see you all over at Wattpad when I start posting it in late September! Thanks for reading, and have a wonderful day! God bless!)