Irene glanced at the boys worriedly before taking out her cell phone and calling ICS.

"Hi Maizie, it's Irene, I need to talk to Dr. Cho." She began to pace around while the boys leaned against the counter, waiting patiently. Robby glanced around the kitchen, the guy at least was neat. He noticed some pictures on the refrigerator and went to get a closer look. There was a picture of Maggie standing next to a guy with unusual hazel eyes and windswept sandy brown hair. His gaze was intense. But from the way he and Maggie were standing, it looked like they were a couple.

"Hey Irene," whispered Robby. She paused in her pacing and looked at him. He pointed to the picture. "Is that Jack?" She nodded and went back to pacing. Harry joined him to look at the picture.

"Huh, weird shade of eye color," muttered Harry. His forehead furrowed. "Is it just me, or does this picture make it look like Jack and Maggie are a couple?"

Robby glanced at him. "You noticed too?"

Hary scoffed. "Hard not to." There were other pictures, older ones, that looked like they were of Jack and his parents.

"Dr. Cho? Hi, yes, it's Irene, we . . . no, no Dr. Cho, he's not here. We've searched everywhere." She nodded a couple of times as she listened to whatever it was that Dr. CHo was telling her. The boys watched and waited. "Yes ma'am . . . yes ma'am . . . we'll definitely do that before we head to the restaurant. We'll see you when we get back. Bye Dr. Cho." She hung up with a sigh.

"So, what does Dr. Cho want us to do?" asked Harry.

"She wants us to find out if he left any clues as to where he was going last night. I'll check with the neighbors if you want to check in here."

The boys nodded. "Meet at the car in ten minutes?" asked Robby.

Irene nodded. "Sounds good." She walked out the front door and went to the house next door.

Harry huffed. "Well, we'd better get looking."

"Harry, check the bookcase, I'll check his desk."

"It's more than likely going to be in the desk, man," said Harry.

"More than likely, but I want to cover all our bases. We'll leave the coffee table for last."

Harry saluted him. "Roger that." There was mostly silence while the two worked, besides the sound of paper rustling.

"Huh," Robby said rather loudly as he picked up a card and read it. Harry snapped his book shut and quickly stepped over to the desk.

"You found something?"

Robby showed him the card. "Maybe?"

Harry read the card. "'Jack, I know you'll find what you're looking for and all our troubles will end. Love, Maggie.'" There was a moment of silence as the two boys processed the note.

"He's been out looking for something, but what?" asked Robby, finally breaking the silence.

"And he and Maggie definitely are together," said Harry. "Plus, it sounds like Maggie might know."

Robby nodded. "But this might not have anything to do with his disappearance."

Harry shrugged. "Might not be, but it's all we've got right now."

Robby nodded. "That is true, unfortunately."

"You didn't find anything else?"

"No, did you?"

Harry shook his head. "Nah." He waved the book he had been holding. "Nothing but books on marine life and Hawaii." Harry grinned. "A few of which were written by your folks."

Robby scoffed. "Well duh, anyone serious about marine biology would have them."

Harry chuckled. "I know, but that would mean this guy is serious about marine biology." He paused. "But then, where did he go?"

Robby sighed. "Well, ready to see if the coffee table has any answers?"

Harry scoffed. "You bet. I'm sure I opened every book to see if there was anything between the pages, nothing." He returned the book to the shelf. "Let's get this over with quickly, I think I'm beginning to feel those pangs of starvation your dad was talking about."

Robby's stomach grumbled. He grinned sheepishly. "I think I am too." The two made quick work of everything on the coffee table, but nothing seemed to stick out or seemed important.

"Well, that's that," said Harry. He glanced at his watch. "And it looks like it's just about time to meet with Irene."

Robby nodded as he stood up. "If you want to head out that way, you can, I want to take a picture of this card so we can show it to Maggie. Hopefully that will convince her to tell us what's going on."

Harry jumped up. "Then I'll snap one of that picture of the two of them, that might help."

"Good idea." Both boys quickly snapped the photos before dashing out the door and went to the car. Irene was already waiting for them.

"Did you find anything?" Both boys shook their heads.

"But this did catch my attention," said Robby as he showed her the picture.

Irene read the message softly. "But that might not mean anything," said once she finished reading.

"We know, but if Maggie can give us some clue as to what he was looking for, it could start us in the right direction," said Robby.

"Well, it might, and it kinda fits with the neighbors' reports."

"What did they have to say?" asked Harry as Robby pocketed his phone and unlocked the Jeep.

"Just that, for the past six months, Jack has gone to bed early, left the house after midnight and came back before four. He then got up at six to come to work."

"Man, how does he do that?" asked Harry.

"Do they know where he went?" asked Robby as Harry and Irene got into the Jeep and buckled in.

Irene shook her head. "They're not sure, but a couple of times they saw he had something that looked like it belonged to ICS, and thought he was going to a night shift." She glanced between the boys and frowned. "But there is no night shift!"

Harry shrugged. "How would they have known? They didn't ask him about it."

Irene huffed. "That is true."

"But then, why would Jack be going to ICS at night?" asked Robby.

"And if so, where does this whole thing about looking for something come in?" asked Harry.

"It still might have nothing to do with it," said Robby.

Irene gasped as she gripped the seats. "Or, it might have everything to do with it."

"Huh?" chorused the boys.

"There's a rumor that the Hawaiian Heist was buried on or near Devil's Hat!"

"Huh?" chorused the boys again, even more confused.

Irene sighed. "Right, you don't know about that. Devil's Hat is an island just off of Nai'a Bay, you should have seen it, Robby, when you and Kalea were saving Poipu."

"Oh, I did!" exclaimed Robby. "But I thought it looked more like a pirate's hat."

Irene chuckled. "It does, but it's called Devil's Hat because rumor has it that it's haunted."

"Really?" asked both boys.

Irene nodded. "It's been stated by several eyewitnesses to have seen a woman dressed in white floating around the cliffs and they heard a woman singing a haunting melody. A lighthouse was built there years ago, but no one could stand working there for more than a week. Now it's totally abandoned, but the waters around the island make for great surfing."

"OK," said Harry slowly, "so why would Jack be looking there for something, and at night?"

"That brings me to the next part, there's a rumor that there's buried treasure at Devil's Hat."

"Yup, pirate's hat," said Robby.

Irene chuckled. "I suppose so. Anyways, it's been almost a hundred years ago since the biggest heist of Hawaiian history was committed, called the Hawwaiian Heist. Several of the big name jewelry stores at the time were robbed by this man named Hank Mobley and the police were hot on his trail. He gave them the slip and managed to hide the jewels. They found him leaving the waters of Nai'a Bay and arrested him, but they weren't able to find the treasure. They took him to prison, but then he escaped, and was never heard of again. The treasure is speculated to still be hidden in Nai'a Bay, though some speculate that Hank Mobley did come back and took it with him before he disappeared."

"Whoa," said the boys in awe.

"But then, if the treasure is still in Nai'a Bay," wondered Hank, "why is Jack looking for it?"

Irene shrugged. "I have no clue. Maybe he wants more money? Fame? But, the thing is, that just doesn't seem like Jack's style. He prefers working with the dolphins, and has always been happy to do that."

"If he is looking for the treasure," said Robby, "maybe Maggie knows the reason why."

Irene huffed. "I hope so, and I hope she tells us. She can be pretty stubborn."

"And I'm sure she'll be loyal to her boyfriend," quipped Harry. "If she promised him not to tell, guess she won't tell, huh?"

Irene blinked. "Jack and Maggie are going out? What makes you think that?"

"Did you not take a good look at that picture of them on the fridge?" asked Harry. "They're obviously a couple."

"And uh, the note did say 'Love, Maggie'," pointed out Robby.

"Oh." Her eyes widened. "Oh!"

Harry turned to Robby and grinned. "Now she gets it."

Irene smacked her forehead. "You're so right! I totally missed it! And there were plenty of hints that they liked each other at work." She pursed her lips. "But Dr. Cho is against it, she didn't want their relationship to get in the way of their work at the lab, which is understandable, but it looks like they've gone behind her back and started going out anyways."

"Do you think if we bring up that we figured out they're dating that she'll tell us about what Jack's been up to?" asked Robby.

Irene winced. "Maybe? You can't quite be sure with Maggie. But I certainly hope so."

"I hope so too," said Robby softly. "But first, lunch." He pulled into the parking lot of a seaside restaurant. The sign said it was Uncle Billy's Fish Fry and Scuba Shop.

"Uh, Fish Fry and Scuba Shop?" asked Harry as the three got out of the car.

Irene chuckled as she nodded. "Yes, Uncle Billy lends out boats and scuba gear too, and equipment to catch your own meal if you want."

"Sounds like a blast," said Harry.

Robby chuckled. "I don't think Dad and Grandpa have the time for that right now. We need to get in and out."

"Well, let's get in first," quipped Harry as he marched in. Robby laughed before following, meaning the two didn't see the look of worry pass over Irene's face before she entered. But she wasn't worried about entering a well-known local restaurant, it was worry over Jack Storm.

The restaurant looked small, cozy, and cluttered. Some of the rental pieces were hanging on the walls and an old, worn-out boat hung over their heads. There were only a couple of other people at the tables.

"Hello there! Welcome to Uncle Billy's!" called out the man at the counter with a wave. The three walked towards the counter. With his white hair and beard and ruddy complexion, Robby wondered if the guy dressed up as Santa every year for the town's kids. "What can I do for ya? A rental, an order, or a rental to catch your order?" He chuckled.

Robby chuckled. "Just an order, please, for Jacob Von Hoffer and a party of ten."

Billy arched an eyebrow and reached for something under the counter. "Jacob, eh? Why would Jacob send you?"

"Uh, because I'm his grandson."

Billy blinked before his eyes widened. "Oh, Robby!" Robby bobbed his head. "Well forgive me, lad, but your grandpa doesn't have very many updated pictures of you!"

Robby laughed. "You're fine."

Billy glanced at Harry. "And who's this scrawny shrimp?"

"Hey!" Harry crossed his arms. "What is it with everyone today?"

Robby laughed as he put his arm around Harry. "This is my best friend, Harry Smith."

"Ah yes, Jake mentioned you too." He glanced behind them. "Oh, hi Irene!"

She grinned and waved. "Hi Uncle Billy!"

Billy pointed at her. "Why didn't you say you were with them? I wouldn't be so distrustful of them."

"What?" chorused the boys.

She flashed him a sheepish grin. "Sorry, Uncle Billy, it's been a stressful day."

Billy leaned on the counter, looking at her with concern. "How come?"

Irene sighed. "Poipu came in this morning, injured, and Jack Storm has gone missing." She glanced at the boys. "They found a note that suggested he was looking for something and according to the neighbors, he's been going to ICS at night for the past six months."

Billy's eyes bulged. "Do you think he's using ICS tech to find the treasure?"

"But why would he need to? Something's not adding up," said Irene. "We need more information."

Robby nodded. "And I hope we'll get it."

Billy glanced between the two boys. "You two are alright."

"Glad to have your seal of approval," quipped Harry.

Billy roared with laughter. "Yes sir indeed, you two are alright. Look at me, sitting here chatting away when you placed an order! Party of ten, right?" They nodded. "Alright, give us a few minutes and we'll have that out to you. And since this has been a stressful day and you've been so patient with me, I'll throw in a little something extra." He pointed at Robby. "You tell your grandfather it's free of charge and don't bother trying to change my mind on this, ya hear?"

Robby saluted him. "Yes sir!"

Billy grinned. "Be back soon."

Harry chuckled. "You know, he ain't bad himself. Kinda reminds me of Mr. Lillibulero."

Robby grinned and nodded. "You know, you're right. Probably just as tough too."

"Uh, who?" asked Irene.

"Oh, an old Navy friend of my dad's. He's come by the station quite a few times. He's now a member of the International Bureau of Police and is basically assigned to our station. He's there now, keeping an eye on it while we're here."

Irene smiled. "It's good to be able to rely on a trustworthy friend like that."

Robby nodded. "Yeah, it is." The three went silent after that, each to their own thoughts. What had happened to Jack? What was he looking for? The treasure, or something else? What would happen now?

Billy snapped them out of their thoughts when he returned to to-go boxes full of delicious scents that made their mouths water and their stomachs grumbled. Billy laughed. "Do I need to come with you to make sure this gets to everyone else?"

Harry grabbed his stomach. "Oh, you wound me! First you say we're alright, and now you don't trust us?"

Billy tilted his head and laughed. "Alright, alright, get a move on before you start dying of hunger."

The trio chuckled. "Thanks Uncle Billy! Bye!" Each grabbed a portion of the food and made their way quickly out to the car. They got into the Jeep and raced back to ICS. They were greeted with open arms, though James looked like he was reacting more with an open stomach. They ate the food in a meeting room while the tio pondered telling them about the note and their suspicions. If Jack really wasn't looking for the treasure, they could put him and Maggie in a lot more trouble than they needed to be. But Irene did tell them about his midnight trips to what the neighbors thought was a night shift at ICS.

Dr. Cho wiped her mouth with a napkin and glanced at Jacob worriedly. "Why would he make them think he was coming here?"

Jacob shrugged. "I don't know. Maybe so they wouldn't get nosy? You can leave your house unlocked, but that doesn't mean you don't have nosy neighbors."

Dr. Cho sighed. "This is true, but still, where could he have gone?"

"Could there be a connection between an injured dolphin and a missing scientist?" mused James. Robby noticed Maggie's eyes grow big, but she quickly hid it. Maybe they were.

"I don't know, but I do know it's time to call the police," said Dr. Cho as she rose from her seat. "Thank you for lunch, Jacob. Excuse me." As soon as she left, Maggie, Ilithyia, James, and Miriam left too, to check on Poipu. Irene wanted to check on Kalea, and Stan jumped up to go with her, leaving Harry, Robby, and Jacob.

Jacob sighed as he rose from the table. "Can you two help me clean up?"

"Oh, OK," said Harry with a sigh as the two stood up. They got to work helping him clean up.

"Hey Grandpa?"

"Yes Robby?"

"Do you think Jack would look for the treasure at Devil's Hat?"

Jacob turned to Robby, blinking in confusion. "No, why should he? He's good at his job and liked doing it. Why he would come here at night is beyond me, though. Hmm, maybe he actually came here to meet with Maggie and head out somewhere so Helen wouldn't suspect . . . but at midnight?" He shook his head. "I don't know, I think there's some piece missing."

Robby nodded. "That's what the two of us and Irene thought!"

"But if something did happen to him at Devil's Hat, we'd have to fight off his captors and the spooks," said Harry with a slight shiver.

"Spooks?" asked Jacob. The boys glanced at each other before telling him what Irene told them. Jacob straightened up and blinked in confusion. "What is going on with everyone today?"

"That's what I asked!" exclaimed Harry.

Jacob shook his head. "I don't know why she'd tell you that boys, there have never been stories of ghosts on Devil's Hat."

Harry sighed. "Oh good . . . though it would make sense why it's called Devil's Hat instead of Pirate's Hat."

"Oh it's called Devil's Hat because someone mistook a trident-shaped rock for a pitchfork, and there was chanting heard on the island."

"Sh-she didn't tell us that!"

"But the name stuck, even in spite of the actual rumors."

"Wait, what were the rumors?" asked Robby.

"The rumors were never about ghosts or demons at Devil's Hat, but mermaids!" The boys stared at Jacob in shock. Mermaids?!

(Author's Note: Alright, I am leaving next week, so double chapters this week! Which means four chapters for Robby and two for the rest. I hope I shall be back July fifth, we have a cabin reserved until then, so we'll definitely need to get into a house by then. I also hope that there will be internet at the cabin. I might post something small that week, just so I can keep everyone updated. Thanks for reading and I hope everyone is having a wonderful day with their fathers today! Happy Father's day, and God bless!)