Brooke Bloom

Rollins investigates an assault by a masked man at an underground party; Benson uncovers a suspect who may be valuable as a witness.

Efforts to find an eight-year-old boy kidnapped for ransom are hindered by tension between the child's estranged parents. Sgt Benson is asked to take the lieutenant's exam and officially become the leader of the squad.

When a hardened bank robber who's been in Witsec in prison for decades is finally paroled, it falls to Mary to help him acclimate to life on the outside and keep him from falling back into a life of crime. Meanwhile, when one of Mary's other witnesses becomes the victim of a revenge plot, Marshall steps in to help out - only to find himself in a predicament when the witness prefers him to Mary.

The clock is ticking for Rush and Vera, who must find and stop a serial rapist before he strikes again.

Lupo and Bernard cut through the yellow tape to investigate a double murder. The key to the crime lies in a sorority party that took place 30 years earlier.