Bobby Mannetti

Bobby Manetti is a budding serial killer who conspired with Arthur deRhodes in a series of murders imitating deRhodes' to help him escape his imprisonment and who appeared in Doppelganger on Profiler.

Background
Bobby Mannetti apparently had an unhappy childhood with his father, Francesco, leading him to develop a fascination with and attraction to serial killer Arthur deRhodes, who himself was motivated in his murders by his loveless father-son relationship. Manetti soon got a job at Lasalle Institute for the Criminally Insane, where deRhodes was imprisoned, as a means of getting closer to him. He even built and set up a cabin in the woods almost identical to deRhodes'. deRhodes somehow convinced Mannetti to assist in his escape and revenge plan, starting with a new series of fatal gassings to get the attention of Samantha Waters, who captured deRhodes, so deRhodes could kill her when he escaped. As an added incentive, deRhodes falsely promised Mannetti he could kill the senior Mannetti personally as a reward.

Doppelganger
Mannetti starts off by killing deRhodes' psychiatrist, Dr. Jacob Klein, using deRhodes' M.O. to get Samantha Waters' attention. He then murders Tony Kagen in the same way. Later on, he helps deRhodes escape by knoching a guard unconscious and taking his keys to free deRhodes and flee with him. The two then collaborate so deRhodes fatally suffocates the senior deRhodes by cutting his oxygen supply. deRhodes, however, turns the tables when they go to visit Francesco in his retirement home by restraining both Mannettis in his room as a trap to lure Waters into. When she and the team arrive, Mannetti shouts through the door deRhodes will kill all of them if Waters doesn't go in alone. Waters enters to see Francesco restrained to his bed and gagged and Bobby chained to a chair and gagged, deRhodes standing over them with a large tank of nerve gas he threatens the release into the room with all four of them. After enough distraction, however, Waters succeeds in buying enough time for John Grant to shot through the window with a sniper rifle, killing deRhodes instantly and releasing the gas for only a second before Waters turns it off. Mannetti is then arrested and taken into custody.

Modus Operandi
Mannetti typically killed his victims with a nearly identical M.O. to deRhodes', starting off with men connected to him as a distraction.

Profile
Mannetti was drawn to deRhodes due to their similar pasts, feeling they're the same person and ultimately wanting to transform himself into deRhodes.

Known Victims

 * Dr. Jacob Klein (deRhodes' psychiatrist)
 * Tony Kagen
 * Unnamed security guard (assaulted; knocked unconscious and took his keys)
 * Francesco Mannetti (attempted; deRhodes tried to kill them both instead, but failed)

Proxy Victims

 * Winston deRhodes (Arthur's father; suffocated from restriction of oxygen by Arthur deRhodes)