“The Subject” is a darkly comedic film about a headshot photographer who capitalizes on his client's moment of vulnerability, ultimately leading to a violent confrontation which activates the photographer’s desire to inhabit his subject’s headspace. The film is a two-hander starring Morgan Krantz (Heil Jupiter!, Better Call Saul) and Babak Tafti (Swallow, Succession, The Feeling that the Time for Doing Something Has Passed