Dangerous Blondes.

Mystery writer Barry Craig (Allyn Joslyn) and his wife Jane (Evelyn Keyes), prefer solving crimes rather than writing about them. They get a chance when killings plague the fashion photography studio of Ralph McCormick (Edmund Lowe). After his secretary, Julie Taylor(Anita Louise) reports an attempt to murder her there, Erika McCormick's (Ann Savage) Aunt Isabel Fleming (Mary Forbes) is stabbed and the evidence points to Madge Lawrence (Bess Flowers) an older model and an apparent suicide. Police Inspector Joseph Clinton (Frank Craven) declares the case closed...but then Erika is murdered.