The team is still reeling from Jimmy being shot. But, now they have a witness they are hiding from everyone as the SIU team secretly work to solve Jimmy Blue's attempted assassination. Their first case is a mystery wrapped in a riddle as they hunt down a serial killer and sexual predator preying on innocent women. But, they have an even bigger threat looming in the shadows.

Tarik and Tessa are becoming leaders in their own right. The crime world is stirring, and SIU finds themselves in the middle of a war. Then, as luck would have it, they get a key piece of information linking Jimmy's shooting to Argon. Tarik and Han go head to head in a battle of wits to find Jimmy's killer and once the dust settles, no one will be the same.