Nazi serial killer posing as a Rabbi Yitz Perlman killed someone and Marc Spector witnessed it. Due to the traumatic experience, Marc developed a dissociative identity disorder, and never told anyone about Perlman's true nature. When Marc's multiple personalities started manifesting, his father Elias Spector interned him at the Putnam Psychiatric Hospital.
He was treated by Dr. Emmet a psychiatrist and who was adept at hypnosis. Spector's particular case and his subsequent adventures as Moon Knight caused Dr. Emmet to develop a fixation towards him.
After his father's death, Marc was allowed to leave the hospital temporarily to attend the funeral and a late luncheon, but, after hearing Khonshu's voice, he ran way. After his death Marc resented his father, believing that Elias was embarrassed by him.