“Shift” (*1/2 out of four) was an unwieldy psychodrama about a security guard (Connor McGill) working an overnight shift who uncovers a chilling mystery when a tenant’s visitor disappears without a trace and he begins to realize a killer is in the building with him. Not all that different from the 1998 Ewan McGreggor disaster “Nightwatch” and film is nowhere near as brutal or as unwatchable but still unlikely to win a place at next year’s Oscars. McGill does what he can and has to carry the majority of film single-handedly.