Disclaimer/Author's Note – See Chapter One.

Chapter Three - Evidence

Grissom found Sara in the observation room, watching Brass interview the couple through one-way glass. He raised an eyebrow at her and she shrugged.

'Hey, he wanted to go ahead without you,' she said. 'Don't blame me.'

'Anything yet?' he asked, taking up position at her side and looking through the glass at the couple, who he guessed were in their late teens, early twenties.

'Not really,' Sara told him. 'They met up with Clive and Mary at around 8pm, Wednesday night. Went to a movie together. Grabbed something to eat. They say they parted company sometime around 11.30.'

'Where?'

'A fast food joint, just off the Strip.'

'So that's what? A thirty minutes drive from where we found their bodies?'

'Give or take,' Sara replied, glancing at him. 'And time of death is between midnight and 2am.'

'Do they have an alibi for those two hours?'

'Say they were at home in their respective beds, and that their parents can confirm that. We'll see.'

They stood in silence for a moment, watching Brass finish up the interview. Grissom thought Missy and Daniel seemed honestly upset by their friends' deaths. When he thought of the emotion of the crime, they didn't seem to fit. But he knew that people could lie. The evidence didn't. And if the evidence led back to this couple, he'd look hard at them.

After a few moments' silence, Sara cleared her throat. 'So, uh… did Ecklie say anything?'

'What about?' Grissom asked, still watching the interview.

'About anything he might have overheard?'

'Oh. No,' Grissom looked at Sara and saw the deep relief on her face. 'No, he wanted to talk about one of the latest victims. Seems she's the daughter of a friend of the Mayor's.'

'Uh oh,' Sara said. 'Politics. Your favourite.'

Grissom made a sour face and turned his attention back to the interview.

Catherine found Nick and Warrick in the CSI garage, going over the first couple's car with a fine-toothed comb.

'Anything yet?' she asked them.

'Found a partial on the driver's door. Doesn't appear to be either of the victim's. Jackie's working on it now,' Warrick told the strawberry blonde.

'So far, all I got is a couple of ticket stubs from the multiplex down off the strip and used condom,' Nick told her.

'Used?'

'Yep. Sex in the back seat. Guess they're not using the back row of the movie theatre anymore.'

'Guess not,' Catherine replied. 'DNA?'

'Gave it to Mia a little while ago. She said she'd let me know when she had something. She was still working on the hair and skin from your scene.'

'So what do you think, Cath?' Warrick asked her. 'Same perp?'

'If it's not, then there are two unrelated sick people out there,' Catherine replied with a shake of her head. 'Cutting out hearts is not exactly common place.'

'What about Greggo's theory that it's to do with Valentine's Day coming up?' Nick asked.

'I don't know Nicky,' Catherine shrugged. 'Nothing would surprise me anymore.'

Greg caught up with Grissom and Sara as they returned to the lab.

'Hey Sara! Grissom. Mia just handed me the DNA results on the skin and hair samples we found at the second scene.'

'That was fast,' Sara remarked. 'So, did they match the first case?'

'They hair from this case matches the hair Grissom and Nick found at the first scene,' Greg confirmed.

'So, we got our confirmation,' Sara said. 'We're looking for a serial killer.'

'That's not all,' Greg told them. 'The skin sample didn't match the hairs.'

'So, whose is it?' Grissom asked.

'No match to either victim. But it's XX. And the hairs are XY.'

'Our killers are a man and a woman?' Sara asked.

'We're not just looking for a serial,' Grissom remarked. 'We're looking for Bonnie and Clyde.'

TCB.