Death by cigarette smoking...

Wade calls Marlowe again, asking him to come by to have lunch with him. Wade drinks himself into a stupor, so Marlowe takes a walk outside. When he returns, Eileen Wade is ringing the doorbell, saying she forgot her key. Marlowe finds Roger Wade dead on the couch, apparently from suicide, but Eileen accuses Marlowe of killing her husband. Candy fabricates a story to implicate Marlowe, believing him to be guilty, but his claims are undermined in an interrogation.

...shared bungalow with Candy in Hyde (Strategic Air Command) after discharge from the Army.   Kay went to the Employment Security Commission for employment assistance on a job in the fall of 1975.