John joins police on a strange and twisting missing persons case that turns fatal, sending investigators on the trail of Alejandro Castillo. And Cal takes on the case of Leticia Smith, a woman on the run from a terrible crime with nothing to lose.

When an insidious sexual predator is discovered hiding in plain sight, John helps police in the pursuit of dangerous James Meece. And after a brutal home invasion, Cal goes into the field to help police track down the dangerous James Watts.