Disclaimer: I do not own NCIS, I am merely borrowing it.

A/N: This idea has been in my mind for a while now. If you don't like it, don't read it. Reviews make me update.

WARNING: Updating may not be a regular thing, I have a gazillion assignments due and exams to prepare for, this is merely a muse to keep my mind off the stress.

Prologue

'Take time to deliberate; but when the time for action arrives, stop thinking and go in'.

'David, DiNozzo! What have you got'? Gibbs barked at the two agents.

'A warehouse in Alexandria has been paid for in the suspect's name'. Tony said, furiously typing at his computer.

'Ziva sent the address to me, Boss' McGee said as he grabbed his gun and badge from his desk drawer, his two co-workers followed in his example.

'Let's move'. He ordered from the elevator.

Gibbs' team raced through the steel doors, just before they closed.

'I want this to be a retrieval only. Don't shoot unless it's necessary'. Gibbs told his team.

They had been in search of the killer for weeks, the man's name was Ahren Heinrich, a German bio-chemical engineer. For three weeks the team had suffered through investigating the murders of children. Their ages varied, but the method he used remained the same, all of the victims had puncture wounds to their bodies, made by an arrow.

After analyzing an arrow head that was left in one of the children, Abby discovered that it was laced with a chemical substance that her equipment couldn't identify. It was torture for her. There was a man on the loose who was poisoning children and dumping their bodies. To her despair her beloved science couldn't help bring this monster to justice.

It wasn't until Tony discovered the fingertip of a latex glove at one of the many crime scenes that Abby discovered the name of the murderer. Ahren Heinrich. She would make sure that this bastard would rot in hell.

Gibbs kicked in the door of the warehouse. Tony and Ziva entered with their guns drawn, they scanned the building and once Gibbs heard both of the agents shout 'clear', he and McGee walked into the large building.

'There are enough chemical weapons in here to fuel a small army'. Ziva observed.

Surrounding them were various vials of what they could only assume to be chemicals compounds.

'We have another problem'. Tony spoke up.

He pointed toward the corpse of a boy who looked no older than 3 years. His face was blue and a belt was wrapped around his neck. The toddler had clearly been strangled to death.

Ziva leant over the small boy and closed his eyes. She had seen many dead children, but it never gets easier.

'He's killed this one differently'. McGee said, taking note of the belt raveled around the child's small neck.

'You think'? Tony snapped.

'Enough' Gibbs growled. Arguing wouldn't find the killer. 'McGee, call headquarters, I want every square inch of this building bagged and tagged. Ziva, Tony, collect anything that could lead us to Heinrich'. Gibbs said as he flipped open his phone.

'Yeah, Duck, we have another one'. Gibbs said solemnly.

'132 Price Road, Alexandria' He spoke before hanging up.

Gibbs looked to his stationary team and yelled, 'What the hell are you doing standing around? Get to work'!

They all jumped into their tasks, McGee dialed for backup, while Tony and Ziva searched opposite ends of the warehouse.

'Gibbs. I think I found something'. Ziva yelled out.

'What'? He asked.

'A calendar. Four dates are marked and there is a sticky note'. She said as she pulled the calendar down.

At the same moment the calendar left the wall, an arrow flew out from the spot it was hanging from and hit Ziva.

She gasped and stumbled backward, clutching at her chest. The calendar was long forgotten.

'Ziva'. Gibbs said in surprise as she collapsed into his arms.

'Call for a medic'! He yelled at no one in particular. Keep pressure on the wound. He pressed on her chest, eliciting a gasp from Ziva.

'The dates..' She murmured.

'Don't try to talk'. Gibbs said.

He looked down at where the arrow had hit, it was sitting a few inches short of her heart.

'Paramedics are on their way'. McGee said from behind Gibbs.

Tony was almost immediately by Ziva's side, but she was oblivious to him. He looked over the calender and understood what she meant.

'Boss, the dates circled are 26, 30, 36 and 56 days from today. Those are our ages'. Tony said and he held up the sticky note.

'Whoever the arrow hits'

'I think he's poisoned her'. Tony whispered.

'The hospital can fix this'. McGee spoke up and he recited like it was a mantra, 'She'll be okay'.

When Ducky arrived at the scene, Gibbs was standing in the door way, stained with blood and an unreadable expression was plastered on his face.

Something was quiet terribly wrong.