A house party ends in tragedy when the balcony collapses, killing hostess Libby Drake. However, as the CSI team is called in to investigate, doubt around the cause of death begins to surface: was the victim dead before she hit the floor?
Elsewhere, Flack tends to a distressed woman who arrives at the precinct alleging she has been raped. Asked for any information about her attacker, she says she even knows his name – John Curtis. This name sets Danville on full alert. Curtis was a serial rapist prowling Washington who got off on a technicality. Will Danville be able to get her man second time around?
The team investigates the assassination of a criminal court judge presiding over the trial of a Russian mobster.