Mark Mahoney

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

There’s a body all right.

When the body of a man is discovered buried among a pile of detached doll parts, Mac, Lindsay, Det. Maka (Hu) and Danny are called to one of their most bizarre crime scenes yet. The team must piece together the clues and doll parts to discover who murdered the store's owner. Meanwhile, a beautiful waitress is found dead in a studio apartment recently bestowed to her by one of her patrons. (TV-14)

Malcolm goes after a rival. A chance fling looms large over Floyd's career.