Alain Uy

A human jawbone found at the Jeffersonian alerts Brennan and the team that the Gormogon serial killer has struck again; a lab explosion lands Zack in the hospital; Gormogon's silver skeleton disappears from the vault.

When a predator sets its sights on friends of Sgt. Wu, Nick and Hank must figure out how to deal with him as the investigation escalates. Elsewhere, Adalind prepares for a special delivery.

Ray and Frank consider the alternatives; while on the trail of a lead, Ani and Paul head up the coast.

The squad is called in to identify the victim and track down a killer when a severed human foot washes up on shore.

Lindsay bends the rules to find a cop killer and gets a visit from her estranged father, whose reputation in the force is less than perfect.

Recordings belonging to Piz's favourite singer go missing, and Veronica helps him look for them. Keith's campaign for sheriff is jeopardised by an unlikely candidate.