chunk: Arthur Bishop (Charles Bronson) is a "mechanic"âa top hit man (assassin). He works exclusively for a secret international organization, which has very strict rules. Bishop is very sophisticated, as he regularly listens to classical music, has an art collection, and is a connoisseur of fine wines. However, he is forced to live alone - he cannot show emotions or trust people. Bishop is under constant emotional pressure, so much so that he is prescribed medication for depression, and one day he is temporarily hospitalized when he loses consciousness as a result of the stress. Bishop pays a call girl (Jill Ireland) for an ongoing girlfriend experience to have a simulated romantic (social and sexual) relationship, including her writing him fake love letters.