Thanks to everyone reading and reviewing.

For the record I have no idea what New York drain systems are all actually like, so I apologise if any of this seems a little unrealistic but it's fanfiction so it doesn't need to be perfect.

Disclaimer: Not mine, as usual.

Chapter 4

"This is being noted as the worst storm that New York has seen in years!" the female News reporter stated on the TV right before Fin switched it off.

"Do you mind, I was watching that!" Munch told him.

"You want a weather report then open the god-damn window." Fin told him.

Munch just glared at his partner, truth was he wasn't interested in what was on the TV but rather the slight distraction it offered him from worrying about Olivia.

"This map shows all the new storm drain systems and highlights the ones that were built before them, and that are now abandoned." Elliot said from where he was sat in front of Olivia's computer, seeing as his was now in pieces in the bin.

Fin and Munch quickly joined him, standing behind him as they both began studying the map.

"You call that a map?" Munch questioned.

"It's the best I could find." Elliot snapped.

"We don't have time to check each one. With this rain it will only take hours to fill. Olivia will have drowned before we've searched even half of these." Fin stated.

"Anyway we can narrow them down?" Munch asked.

"I'll make some calls." Fin said.

Fin had only took a few steps towards his desk when Elliot's phone rang again. Olivia's name told him it was her calling.

"Is she ok?" he answered, again knowing it would be Mac who was on the other end, not Olivia.

"How would you feel if you were stuck down a storm drain with a broken wrist and some nasty cuts and bruises? I'll tell you something Elliot, she's a feisty one, it took a smack to the head for me to be able to get her down there."

Elliot closed his eyes and silently began praying for his partner. He would give anything to swap places with her, but he knew Mac was finding this too fun to do that.

"I should warn you that it's pretty deep in water down there, so Olivia has less time than you may first have thought. It's surprising just how quick its filled, really."

"Please, Mac, just let her go."

"Happily, Elliot…if you tell me where your family is."

Elliot stayed silent but Mac knew that was actually his answer. "Your choice, and here was me thinking you actually gave a shit about your partner. I even thought maybe you two had a thing, I thought you'd gotten lucky being able to fuck Olivia, but now I can see you aren't. Surely if you were you'd give much more of a shit about her well being right now."

"I don't have to be sleeping with her to care about her. Just let her go!" Elliot begged. It was all he seemed to be doing but whilst they had no idea where Olivia was, begging was his only option.

"If your not doing her, do you mind if I do?" Mac asked, not that he needed Elliot's permission.

"God-damn it Mac, keep your dirty fucking hands off her!" Elliot cried, his voice shaky.

~0~0~

Mac stood there and had to smile, "Make me! Better yet, come stop me, Elliot." he replied before he hung up.

From where he stood he looked straight down into the drain hole. He held his arm out over it and allowed the phone to drop out of his hands. It fell through the air and landed into the water below with a splash where it quickly sank to the bottom. He then began to climb in, making the short climb down the rusted metal ladders, parts of which were broken, steps missing or half hanging on; the rust having eaten through the other half.

Olivia was stood with her forehead resting on one of the steps, having only been conscious for a short while. Mac pushed her aside with his foot and then climbed down next to her. He stood there by her side, smiling at how exhausted and beaten up she looked.

"You won't last a minute down here if you don't wake up." he said.

"I am awake you ass-hole."

Mac laughed before he replied, "Don't be like that." he said it with a smirk as she turned to face him.

He could see a gash on her forehead, it was from where he had used the butt of her own gun to knock her out. He'd tied her to the ladders using her cuffs, having put one cuff around her ankle and the other around the ladder. It meant she was going nowhere unless the step of the ladder broke like the others had.

Olivia groaned as a wave of nausea washed over her. Her entire arm ached and had swollen badly making it almost impossible to move her arm because of the pain it caused her. To add to that was a headache that one would get if they had possibly the worst hangover in history. Every noise, no matter how slight, stabbed into her head like sharp needles.

Mac could see this, see the pain she was in. He stepped behind her, right up close, so close his body pressed hard against hers, and his chin rested on her shoulder.

"I can stop all this. Make all this pain go away; all you have to do is tell me where Elliot's family is."

"Not happening." Olivia told him.

She wanted to throw up as Mac grabbed hold of the ladder around her and used it to pull himself closer to her, so his body was now pressed up tighter against her, now squashing her between his body and the ladders.

"I can make this as easy or as hard as you want it to be." he said, thrusting up against her as he said hard.

Olivia knew what he was implying. "Not even that would make me tell you." she told him.

Mac smiled as he pulled away from her, she tried to step around the ladder, pressing herself up against the mouldy wall of the circular, stone drain hole.

"What about you, do you have any family?" he asked her.

"Nope." she told him with a small smile, it was something she had over him, he couldn't threaten a family she didn't have.

"Too bad, for me, not you." Mac said, a little disappointed. "Anyway, I could stay around here all day and chat with you, I could also find some other things to do with you but that's actually not what this is about and there is somewhere else I have to be that is more important, so I'm going to get going and leave you here."

Olivia had to work hard not to let him hear her breathing suddenly go heavy. She really did not want to be left in the drain, the rain had already gathered around her and the water was well above her ankles.

"You're never going to find out where his family is. I'm not going to tell you and Elliot never will."

"Then have fun drowning down here." he told her before he punched her hard in the face, his movement to quick for her to avoid the full force of it.

She hid her face as tears filled her eyes. She listened as Mac made the awkward climb out of the drain. She heard him slam shut the heavy metal grid above her, she looked up in time to see him fix a big metal pack lock on. He smirked at her then waved before walking off, leaving her alone.

~0~0~0~0~

Elliot was watching a man who was on Olivia's computer. He was from the city council and so had a greater understanding of the storm drains that were now abandoned and those that would be big enough to put a person into. He was giving them all some education on the city's storm drains.

Elliot looked up from the computer when he smelt hot Chinese food. His blood began to boil when he saw a young Chinese man carrying a box full of food. It was Fin who walked over to pay him, it had been hours and most of them were now doing a double shift, a few others, including Munch and Fin, doing even more. Everyone was starving.

"Get that out of here." Elliot ordered.

"Last time I checked you weren't my boss." Fin told him simply.

Fin went to pay the delivery man but Elliot put his hand on his chest and attempted to push him back but Fin remained grounded to the spot.

"We don't have time for this shit." Elliot told him.

"You're right, we don't, so get you god-damn hand off me before I break it."

Elliot pushed Fin hard, he felt like no one else was taking finding Olivia seriously. He was of course wrong but tired and frustrated and so not thinking clearly. Fin stumbled back but remained on his feet. He took one big, angry step forward toward Elliot but Munch and Cragen quickly jumped between them.

"This isn't a play ground. You two wanna fight it out do it on your own time, but right now your wasting time that we could be using trying to find Olivia." Cragen said angrily.

"Exactly why we don't have time to waste eating." Elliot snapped.

"People can eat whilst they work. I want you to take another break, Elliot. Go to the cribs, go outside for some more air, something. Just get out of here. Again, that's an order."

Elliot turned on his heels and immediately stormed out. He didn't want to fight or argue with Fin, but he was so scared and taking that fear out on someone he hoped would make him feel better.

He was about to lose himself even deeper in thought when his mobile began to ring. His heart skipped a beat when he saw caller ID, 'home'.

"You still want to trade, you for Olivia?" Mac asked.

"Yes." Elliot told him immediately.

"Then get your sorry ass home now." he told him. "Oh and if you're not alone, Olivia's dead. I mean it." he warned him before he hung up.

Elliot made a dash for the elevator, he wasn't about to waste time telling anyone where he was going. He wasn't going to risk Olivia's life by getting someone to go with him, he didn't need anyone. He wanted to take Mac out on his own.

~0~0~0~0~

Olivia was soaked through to the bone and freezing. It was dark in the hole, she could barely see her own hand in front of her face. The rain had quickly gathered around her and was now just by her waist.

"Help me!" she screamed once more. She had been crying out for help for hours, since Mac had left. Far off in the distance she could hear the odd car but mostly she heard nothing outside the drain, the rain was too heavy, and every droplet that fell around her seemed to echo in the drain, bouncing off the cold walls.

It suddenly dawned on her that no one was coming to help her, no one knew she was there. She knew she was going to have to find her own way out of the drain but she had no idea how. Suddenly she remembered the phone. She presumed it wouldn't be working after being submerged in water so long but she was prepared to find out for sure.

She took in a deep breath and crouched down under the water. She couldn't see a thing if she had wanted to so she kept her eyes closed and felt around the bottom of the hole. She kept feeling about but she felt nothing, no phone, she was running out of breath when she finally put her hand on it.

She stood up straight and couldn't help the whimper of pain she released. Her arm was killing her. She was trying to keep it as still as possible but it still ached no matter what. She flipped open her phone and wasn't surprised to see it wasn't working.

She let it drop back into the water as she once again rested her forehead on one of the steps of the ladder. She used her left arm, the one that wasn't broken, to pull on one of the steps, she held onto it with all her weight and so nearly fell on her ass when it snapped off in her hand.

It didn't shock her, the drain looked ready to collapse and the ladder looked worse than that. That's when it suddenly occurred to her, if she could break the step she could attempt to climb the ladder and get out.

She rested her weight on one leg and then kicked at the step as hard as she could with the other foot, she kept kicking and kicking it. However, she suddenly lost her footing from underneath her and she fell down, she screamed in pain as her broken wrist smacked one of the steps of the ladder on her way down. Her cry echoed around her, like it was taunting her. She used her left arm to pull herself up again and stood still for a moment and tried to breath through the pain.

She counted to three in her head then, this time holding onto the ladder, began kicking at the step again.

~0~0~0~0~

Elliot ran up the steps and onto his front porch. He had the front door open in record time. He all but ran through the hall and into the living room where there was a lamp on, but the room was empty. He could see from where he stood that the kitchen light was on so he slowly and as quietly as he could made his way into there.

He got in there and saw it too was empty. He was about to turn around when he was hit hard from behind. He fell against the counter and was then hit again. He didn't have chance to turn around before he was hit in the lower back. His legs almost gave out beneath him but he used the counter to keep himself upright.

He then swung his arm out and connected hard with his attacker. It forced them backwards so he quickly turned to face them. He had to step aside to dodge Mac's fist that came right at his face. He reached out and grabbed Mac and pushed him down against the counter.

"Where is she, you son-of-a-bitch!" he roared at him.

Mac answered by swinging his arm out and hitting Elliot in the face. As Elliot stumbled back Mac reached out and grabbed a pan and swung it at Elliot. It hit him hard and with an angry clang.

Elliot groaned in pain and before he had chance to hit Mac back was struck again by the heavy pan, this time in the face. He fell to his knees and Mac hit him again in the back knocking him onto his hands.

He was dizzy, everything was spinning around him and it was all he could do to stay conscious. "I'm gonna kill you, then I'm going to kill Olivia, and one day I will kill your whore of a wife and your snot nosed kids."

"Go to hell!" Elliot mumbled to him.

"After you." Mac said before he swung the pan down hard on Elliot's head, knocking him flat to the floor, out cold.

He stepped back and threw the pan down, it landed with a loud clatter. An idea then came to him. He began searching through cupboards till he found some bottles off alcohol. In turn he opened every one of them. He then grabbed some dish cloths and stuffed them into the top of the bottles before walking over to the stove where he turned on the gas and lit it up. He held the cloths over the flame and waited for them to light up.

Once he had lit them all he threw two across the kitchen in different directions, the second they hit the floor and shattered they roared into angry flames. He threw another two as far into the living room as possible, those too bursting into flames.

He stepped over to the back door, carrying another bottle. The house was already blazing hot and filling up with smoke. He stood at the door and smiled at where he saw Elliot lying unconscious and unaware on the floor.

He smiled and threw another bottle, quickly ducking out the back door before it burst into flames, flames that quickly spread across the floor and up the counters and along the work tops. Quickly spreading closer and closer to where Elliot lay, oblivious to the danger that was literally surrounding him.

TBC

Thanks for reading. Please review and let me know what you think.