: The episode dives deep into Keppler's backstory, revealing a dark history involving a retired cop from New Jersey who arrives in Vegas and complicates the investigation.
is the 15th episode of the seventh season of the long-running crime drama CSI: Crime Scene Investigation , which originally aired in 2007. [S7E15] Law of Gravity
: Aside from Liev Schreiber, the episode features strong performances from guest stars like Ned Beatty. : The episode dives deep into Keppler's backstory,