**_Who’s killing alluring women in early 80’s SoCal?_** A photographer in Los Angeles (Michael Callan) has troubling dreams as he juggles visits to a shrink (Seymour Cassel), dealing with his amputee brother (James Stacy) and establishing a new romantic relationship (Joanna Pettet). Meanwhile a serial killer is on the loose. “Double Exposure” (1982) is a psychological murder mystery with some slasher elements. Think of movies like Shatner’s “Impulse,” “The Centerfold Girls” or “Haunts” mixed with a little “Nightmare” from the year prior. It’s basically a quasi-remake of Callan’s own “The…