Csi — Las Vegas 4x1

"Assume nothing," Grissom whispered to himself, a mantra he lived by.

The evidence led them to a local nightclub, a place where the wealthy came to shed their identities. Sara Sidle tracked a specific type of rare, industrial-strength lubricant found at the scene back to a boutique supplier. The trail was getting warm, but the killers were already one step ahead, selecting their next "guest" for a deadly encounter. CSI Las Vegas 4x1

Back at the lab, Grissom peered through his microscope at a microscopic shard of glass found in the victim's hair. It wasn't from a window or a bottle; it was a fragment of a high-end camera lens. The killers weren't just murderers—they were voyeurs, filming their "art" for a private audience. "Assume nothing," Grissom whispered to himself, a mantra

"They were looking for a 'third,'" Catherine noted, gesturing to a stack of sleek, high-end magazines and a cryptic ad circled in red. "The underground swinging scene. High stakes, high anonymity." The trail was getting warm, but the killers

"They aren't hiding," Grissom realized, looking at the photos of the suspects caught on a grainy ATM camera nearby. "They're performing."