Sean O'Neal surprises Upton with a call from prison, revealing sensitive information. Meanwhile, the team quickly mobilizes to stop a crime in progress before it's too late.

An ongoing case hits close to home for Voight as Intelligence teams up with an SVU detective to track down a prolific offender.

As the monthslong investigation into the serial killer reaches its close, Voight must outsmart the offender in a race against the clock. Upton must make a vital decision.

An unexpected visitor causes disruption for Ruzek and Burgess amidst an emotional investigation involving an unidentified young girl.

Ruzek grapples with his father's worsening condition while Intelligence searches for an elusive serial killer.