Syd and McKenna's personal hunt for Gabriel Knox ramps up as they let the Bens in on their search for the elusive Arlo. Meanwhile, a conflicted Syd must deal with a family crisis, while McKenna is left with a difficult choice between her past and her future.

It's busy for our team of detectives as they continue to investigate the case of the missing diamonds, and the task force executes a major drug bust. With the threat of Knox looming, both Syd and McKenna must confront some of their deepest secrets yet.