Melanie Lewis

A professor from Lewis’ past tips off the BAU to an alarming number of overdose deaths of patients who just completed rehab.

Dire circumstance leads Emily to take extreme measures against both the Graysons and those closest to her.

It’s the worst kind of overexposure when world-renowned photographer Renny Sinclair is murdered while on assignment in Hawaii shooting the annual swimsuit edition of a top sports magazine.

A robbery-homicide prompts Beckett to invite Demming to assist on a case, giving Castle a ringside seat to their budding romance. When it becomes clear that the two men have…