Danica Stewart

The CSI team investigates the death of a high-school student at a private party in a hotel suite upstairs from the school's homecoming dance.

Horatio heads an investigation into the murder of an unidentified, young model whose corpse was discovered within the vicinity of a high-security detention camp for juvenile girls; Speedle and Delko scrutinise the death of a swindler.

Claire tries to determine who is responsible for the attacks on Gretchen and Annie, Sylar maintains his control of Matt, and Peter uses his newly gained ability to help Emma.

Matt goes to extreme measures to extinguish Sylar, who continues to torment him; HRG calls in a favour from Tracy to save a troubled young boy whose misfortunes resemble her own; Claire and Gretchen are being hazed by their new sorority sisters; they realise pledging might not be their biggest problem.