Ballard's serial killer investigation takes a high-stakes turn. With 72 hours to secure the case before it's transferred to Homicide, the team races to find connections between the victims.

The Ibarra case turns personal as Martina discovers someone close to her is part of the corrupt LAPD ring. The team races to identify the remaining corrupt officers before time runs out.

A city-wide manhunt begins for Rawls's shooter. Ballard receives an unexpected update on the LAPD conspiracy case.