A double murder leads the GBI on a cyber-chase to investigate a software firm’s activity behind closed doors. Meanwhile, Angie does her best to ensure a key witness testifies in her case.

To deepen his connection with his late mother, Will joins Antonio in Puerto Rico. Upon his return, he is quickly brought onto a case involving his uncle's old friend. Meanwhile, Faith and Ormewood investigate the mysterious death of a sex offender.

Will, Faith and Angie find themselves embroiled in a series of cases where a similar marker links the murders of several sex offenders. Meanwhile, Angie grapples with an unexpected proposition from Amanda.