He wears a traditional long-nosed plague doctor mask.
He targets individuals who appear sick in public (e.g., coughing) and sedates them with massive doses of ketamine . [S13E14] Miasma
The Behavioral Analysis Unit (BAU) travels to after police discover a mass grave inside a vandalized, above-ground crypt in a local cemetery. While the team hunts the killer, Emily Prentiss remains in Quantico to face a hostile performance review by Assistant Director Linda Barnes. The Case: The "Plague Doctor" Unsub The Unsub: Kevon Winters. He wears a traditional long-nosed plague doctor mask
He drains the victims' blood and then burns their bodies in public cemeteries using rubbing alcohol as an accelerant. [S13E14] Miasma