Dangerous Blondes (1943)

Mystery writer Barry Craig and his wife Jane prefer solving crimes to writing about them, and they get a chance when killings plague the fashion photography studio of Ralph McCormick. First, secretary Julie Taylor reports an attempt on her life in the photography darkroom. Then socialite Isabel Fleming is stabbed during a photo shoot. When the prime suspect apparently commits suicide, Police Inspector Joseph Clinton declares the case closed. Then there's another murder.