6 Months Ago, Oahu, Hawaii. Steve McGarrett's house.

Steve was exhausted, the Hesse brothers were dead, finally. He was still mourning the loss of his father though, it was hard to step back into that house without thinking about him, the good memories that they had shared together, his mum and dad and little sister and, of course, him. He sighed and walked further into the living room and threw his bag onto the sofa. He took a deep breath and walked into the study where his father had his last moments. He walked over to the desk and started pulling the drawers open, trying to find some more clues on this supposed investigation he was running into the HPD and the Hawaiian Government. He pulled open a drawer and saw a letter addressed to him, curiously he opened it and pulled out a letter with a few photos.

"Dear Steve,

I do know that this is short notice and I am sorry for bothering you. Although I highly doubt that you are at the house right now. I just wanted you to know something and I'm really sorry that you are only just finding out now and I know that this will be a shock to you. I have a daughter, Arianna, she's 17 years old and smart, funny, talented, hates swimming. The thing is, Arianna, is your daughter too. I'm sorry that this revelation has come to you so late in her life and it must be very confusing, but she is.

The only reason I am telling you this, is because we are in Hawaii now because of my work, but we are leaving, tomorrow and I will not tell you where I am going. I'm truly sorry Steve, but you can't meet her, me and my husband are happy with our family and all her life Arianna has known Dave to be her father, not you. I feel that this would be much too traumatising for her. I'm sorry but as her mother, I cannot allow you to see her at all. I am sure that you're wondering why I am even writing you this letter, it's because I would want to know if I had a child and I'm sure you do too, one day, when she is much older, I am sure that the two of you will meet again, but for now, I have to be a responsible parent.

Sarina."

Steve looked over the letter and couldn't believe his eyes, he didn't trust them, even though he had 20/20 vision. He read it several times before sinking down onto the work chair. He had a daughter, he had a 17 year old daughter that he never knew about. Steve took out some of the photos and smiled at them. There she was; as a baby, as a small child and how she is now. A school picture and a photo of her by the beach near his house. His heart sank, she was this close and he'd been in South Korea chasing the Hesse brothers. He looked at the date on the postage, and his heart sand further, it was posted more than five months ago. They would be who knows where with his daughter, his beautiful daughter that looked a lot like him.

He sighed and turned to the computer and tried to track down Sarina Fletcher, he knew some of the information, her husband's name was Dave Fletcher and Steve's daughter's name was Arianna Fletcher, it should be Arianna McGarrett. He thought that he would find them quickly, how many Fletcher's could there be. Although, as the months went on and his new job was more and more demanding, he found less time to try and track down his mysterious daughter.

Present day; somewhere in the Pacific Ocean

"Ok, I think we're lost." Emma said in a frustrated voice, I knew how she felt, I was frustrated too, I just wanted to go home, to my beautiful Hawaii.

"No, we are in the Pacific Ocean, we're in the right ocean." I said with determination.

"Ari, we've been swimming for god knows how long, can't we just give up." Rikki said, I never knew that she was one to give up.

"Wait, look at the moon, its pretty full, don't you think?" Bella said mysteriously, looking up at the moon.

"Yeah, why Bella." Cleo asked curiously.

"Well, seeing as Ari changed in the moon pool in Hawaii, if she gets moonstruck, she'll want to swim to that moon pool. Whenever I see the full moon, I want to go to the cave in Ireland. Its natural." She explained and it all made sense to me.

"It's not full now though, we would have all been moonstruck by now and I don't feel as strong of a pull as I do when it's full." I said, a large smile on my face, in a possible number of days, I would be home.

"I reckon it might be full tomorrow." Emma said, looking up at it. "Maybe we should just explore this area for now until tomorrow." We all agreed, we were pretty tired, Hawaii is quite close to Queensland, but it's still a long swim, even if you do have super fishy speed .We dived down towards the bottom of the ocean and half-explored and half-rested whilst we waited anxiously for tomorrow.

. . . .

Tomorrow came very quickly, we resurfaced and stared straight at the moon, well I did. The others agreed they couldn't get moonstruck or they'd want to go home. So I stared at the beautiful moon all by myself. After several minutes of staring at the majesty that is the moon, I had a real desire to go home, to my moon pool that I had missed for all these months. And with that thought, I kicked up my tail and started swimming in the right direction, the others quickly followed me. It only took a few hours before we were at the familiar cliff face, the others surfaced and I did too.

"Where is it Ari?" Cleo asked.

"The water entrance is down in the cliff face, it's a fair swim as the pool is actually in the middle of the forest and no room for breath." I said excitedly and motioned for them to follow me. I quickly found the small entrance, hidden by coral and squeezed myself through and started swimming, I could feel the others following me, but I didn't turn around and acknowledge them because I wanted to get to the moon pool. After about half an hour of swimming as fast as we could in the narrow tunnel, we reached to pool.

It was much larger than the one in Queensland and is right in the middle of one of Hawaii's forests that is very hard to get to. The entrance is hidden by large trees that are native to Hawaii and a waterfall that gracefully falls right over the entrance. Some of the more experienced hikers like this area for the beauty of the waterfall, but not many have discovered what's behind it. I found this place by accident when I got lost hiking and decided to rest behind the waterfall on the night of a full moon over five years ago. Normally in the day time and other nights that aren't the full moon, the cliff opens up to reveal the sky, but on the full moon, the hole gets bigger and a waterfall falls around the large gap as well.

"This is beautiful." Cleo said as she took in her surroundings, I, of course, agreed with her. The other's eyes were wide as they looked at every little detail in my moon pool. I sighed and realised that we couldn't stay here, we had been swimming for a long time, and I for one wanted to get my legs back and deal with our circumstances.

"Come on guys, we have to get our legs back, I know a very secluded beach that we can pull ourselves up onto. We can't walk out of here, because it would take more than a day and none of us are dressed for hiking." I said, and reluctantly, after taking one last look at my beautiful home, I took a breath a started to go out the tunnel again. Once we were out, I lead the others to my favourite beach, it was my favourite because no one ever went there because it was so secluded and surrounded by sharks. We pulled ourselves up onto the beach and once Rikki dried all of us off, we set up the hill.

"I hate this hill." Cleo said, clutching a stitch at her side, I have to admit, I agree with her. The sun was coming up fast and just then a man started walking down the hill, obviously to go for a swim and then he stopped dead and looked right into my eyes.

"Excuse me, are you Arianna Fletcher by any chance." Steve McGarrett asked, but he had no doubt that this was her, Ari's heart sank, she was already recognised, and what if he knew and wanted to take her back to Australia.

"No," I said and started to walk off again, he started running to catch up with me.

"Look, I just want to talk about something your mother told me about 5 or 6 months ago." The man said again. "I know it's you." He added for good measure, Ari sighed, she wanted to get away but she was also curious.

"Who are you anyway?" I asked the man in irritation.

"I'm Steve McGarrett." He said, I lightened at that name, I knew his dad John, and he was the nicest man I had ever met.

"As in John McGarrett's son?" I asked curiously, just to make sure, he simply nodded.

"Look, why don't you come up to my house so we can talk, you guys all look starving anyway." He said, we looked at each other, we were pretty hungry, and swimming across the Pacific Ocean will do that to you. We all nodded together and he smiled and started leading the way. We followed reluctantly but I knew it was close. We got there in less than five minutes and he headed straight into the kitchen to make bacon and eggs.

"So, where's John?" I asked, I would love to see the older man again, Steve dropped his smile.

"Um, he's dead. He died about 6 months ago, murdered actually." Steve said sadly, I instantly regretted what I had said.

"I am so sorry." I started to say

"That's ok. Now, bacon and eggs are ready." He said as he grabbed the plates and set them down in front of my friends and me and we instantly tucked in. We finished pretty quickly and we all had to admit that he was a good cook, but that brought my memory to something else that Steve had said, my mum said something to him.

"So what did my mum say?" I asked curiously,

"Um, maybe you should read it for yourself." He said as he got up off his chair and went into the next room which I knew to be the study, when he came back he had a letter clasped in his hands. He gave me the letter and sat down without taking his eyes off me. I looked at the letter in my hands and opened it and read quickly and I could not believe my eyes.

"Are you sure about this?" I asked hesitantly.

"No, I just found that when I came home for my dad's funeral, but it was written for six months beforehand. I haven't seen your mum, since, well, since it happened." He said calmly, I felt like he was telling the truth and I did feel some connection to him, I wasn't sure.

"Ari, what is it?" Bella asked curiously, I instantly handed them the letter and they skimmed over it before looking at me with shocked and uncertain eyes.

"Maybe you should do a paternity test." Emma said uncertainly, I looked at her.

"I couldn't afford that." I said sadly, Steve looked at me strangely.

"I would pay if you really wanted one." He said, looking me right in the eyes, he gave me the sense that he could read my mind and I made the decision to not lie to him, if I could.

"I couldn't let you do that, what do you do anyway." I asked, I should get to know the man that supposedly could be my father, that was my mother's hand writing and that was her selfish ways, I hoped it was true.

"Oh, um, I'm a Navy SEAL, but right now I'm in the reserves so I can run the Governor's task force, five-O, so, I'm kind of a cop." He said, trailing off. Wow, a SEAL, I knew the kind of training they went through, it was brutal, this guy was tough.

"Wow, that's pretty incredible." I said, voicing my thoughts, he just shrugged it off, typical SEAL, I had to smile at that.

"It is what it is." He said, typical. I saw out of the corner of my eyes that the others were all looking at each other, and I turned to look at them, confusion present on my face. Chiming of a cell phone brought my attention back to my possible father.

"McGarrett." He answered quickly, with my super fish hearing I could hear the other side of the conversation.

"McGarrett, we have a situation down on Waikiki Beach, your team and HPD will handle it but I need to talk to you, meet me in my office in half an hour."

"Yes, sir, I'll be right there." He said, bitterness in his voice. "Look, I'm sorry guy but I have to go to work, is there a number that I can call you on so we could meet up later." He asked hopefully, I checked my pockets, passport, wallet, no phone though, I looked at the others, they all had their phones, but no chargers and all of them were dead. Steve looked at me suspiciously as we told him our phones were dead and we didn't have the chargers.

"I'll leave you with my dad's old phone then. Oh," he said as he started pulling on his jacket, "I mean it about paying for the test, if you want it." He said, and he quickly walked out the door.

"So, what do you think Ari." Cleo asked, "I mean, what are you going to do about that." She said pointing out the door where Steve just left.

"I have no idea, but I kind of hope he is my dad. I mean, well, look at my parents back in Australia." I said, really hoping that it was true.

"Yeah, but what if he reacts in the same way." Rikki said, I groaned but she had a good point.

"Maybe he will, but I don't really get that sense from him." I said, it was true, he didn't present himself like that sort of person.

"Ok let's talk about something else, one, we need somewhere to crash, two, we need some new clothes and a shower, and three, we need phones." Emma said, predictable as always, I had to grin at that.

"And let's not forget that since Ari wiped their memories, we're probably reported missing." Bella added, we all groaned.

"Ok, let's go get some clothes and new phones. How much money do we all have?" Emma said, ignoring the part about us being reported missing.

"I have about 2,000." Rikki said.

"I have almost 15,000." Cleo said, we all looked at her surprised. "What? I've been saving for the last four years for a car once I get to uni."

"I have about 500." Bella said sadly.

"I have just over a grand." Emma said, and now for the big news, the money I had been hiding for over 6 years.

"I have about 200 grand in a bank account that my parents don't know about." They all looked at me like I was crazy.

"How on earth do you have that much?" Emma asked.

"My Grandma on my mum's side died just over 6 years ago and she left everything to me and set it all up in a bank account for me. She was really rich, she left me that much and I haven't touched it, but the rest of her money is due to be released to me once I turn 18." I said shyly.

"Wait, how much are you going to get once you turn 18?" Bella asked.

"I don't know exactly, but they said her estate was worth over 10 million dollars." I said, looking down at my feet.

"How the hell doesn't your mum know about this?" Rikki asked

"My gran didn't exactly like her a whole lot, so essentially she quietly set that up for me and everyone was told that she gave it all to charity. My mum was pissed. I think my gran knew that my dad wasn't my dad. I also have a house here in Hawaii that my mum doesn't know about, it's a mansion." I said, my face going bright red.

"Let's go shopping then." Rikki said excitedly.

"We'll have to use my card because they'll have traces on yours." I said, getting up from my seat. "It's a fair walk from here to the shops."

"How do you know this stuff about cops and the navy?" Cleo asked me curiously.

"I have always wanted to be a police officer for HPD." I admitted.

"Wow, I never knew that about you." She replied as she followed me to the front of the house. I rolled my eyes and we all headed down to the shops near Waikiki beach. It was a long walk and we desperately needed a shower, we all smelt like salt water and body odour. We had fun for about an hour buying clothes and duffels and cell phones, then headed up to the Hilton to book a suite, we were lucky that not a lot of tourists were around that day so we got one without a reservation. I booked for the entire week and we excitedly walked up to the room so we could all have showers and change into different clothes.

It took nearly an hour for everyone to shower and wash their hair and change into their new clothes but we all felt more relaxed when we did. Suddenly the old phone chimed and it could only be one person, my face lit up without my knowledge as I went to answer it.

"Hey, it's Arianna." I said in a happy voice.

"Hey, it's Steve, I need to talk to you for a bit, where are you." He said, I was nervous at the sound of his voice.

"Um, yeah, sure, we're at the Hilton, room 297." I said anxiously.

"Ok, I'll be there in a few, I'm just down at Waikiki." He said and I nervously hung up the phone.

"Um, Steve's coming here in a bit." I said, I was still nervous and I didn't know why, they just nodded and I sat down on the bed, nervously waiting.

"What's the matter, Ari?" Bella asked me curiously,

"I dunno, there was something about Steve's voice that was different from this morning." I said truthfully, before long we heard the ultimate beep of the scanner.

"Hey, it's me." I rolled my eyes happily and buzzed him up. He came quickly and there was someone there with him.

"Hey guys, this is Danny, my partner." Steve said once he got inside the door, we all nodded and waved and said hello.

"What did you want, Steve?" I asked, my nervous voice had come back.

"Oh, um, yeah. Do you guys mind telling me why there are absolutely no records of you coming to Hawaii, or that you are even in Hawaii and why have you all been reported missing."