Disclaimer: I do not own CSI and I am not making any money by writing this story. Author's note: This occurs after the last episode of the third season. Grissom is still in the hospital.

Catherine, Sara, Nick, and Warrick stand on the outside of the crime scene tape looking for the distant end of the yellow. They watch Brass approach them from the other side of the tape.

"What happened here?" Catherine asks.

"That's for you guys to tell us." Brass lowers his head. The magnitude of the situation visibly showing, "By the time any one called 911 everyone within this block was dead."

The team scans the area for any movement beyond that of the uniformed officers securing the crime scene.

"I'll let you guys work you magic." Brass adds quietly and then walks away.

Catherine sighs, "We're going to need everyone with field experience and extra supplies."

"I'll call it in," Warrick volunteers.

"Let Greg come?" Sara inquires.

Catherine smiles weakly and nods.

Warrick separates himself from the group and pulls out his cell phone.

Catherine gathers herself up for the daunting task that lay ahead, "Here's our game plan," she silently cruses Grissom for leaving her to do this on her own "We'll divide the scene into four quadrants. Each of us will head a team. Simple divide and conquer. Let's walk the scene while we wait for back-up."

The four of them, armed with flashlights, duck under the yellow crime scene tape. They proceed carefully making sure not to disturb any of the evidence. Dead bodies line the street. Some look as though life had just stopped for them while other's faces were frozen in terror; the unlucky few huddled in the corners. More than likely they had been the last to die and had witnessed it all. The street was in chaos. Bullet riddled vehicles were stopped at various angles. Points at the time that were escape routes for terrified drivers until a bullet had hit an essential engine part or the driver. Several had crashed into the buildings or other cars. Amazingly none of them had caught fire. Random car doors were open, as passengers had tried to make their escape of foot. Bullet casings, blood, and glass littered the street.

"There isn't any room for shooters down here," Sara points out.

Warrick looks up, "Maybe, they were in one of the buildings."

"I'll ask Brass to find out who the owners are," Catherine responds.

They hear the vehicles of their back-up arriving. It was time to concentrate on the what. The how and why would have to wait until later.