A frightened woman is running barefoot on a highway, trying desperately to flag a car. After several cars pass her by, the woman sees another car approaching, and to make sure either the car stops - or, she's killed, she stands in the path of an on-coming car. Private Investigator Mike Hammer is the one at the wheel, and after almost hitting the woman, he tells her to get in. The woman's name is Christina Bailey.. She is obviously on the run, being barefoot and wearing nothing but a trench coat, and the scent of fear. Whoever was after her eventually catches up with them. Christina has information they want, but dies while being questioned. The killers fake an accident by pushing Hammer's car off the road, but, he survives, waking up in hospital two weeks later. As Mike starts to investigate Christina's death, he's told by the police to stay out of it, but, the hard-nosed PI proceeds anyways. Little did he know that Christina's secret would lead to death and destruction.

In a tale that almost redefines sibling rivalry, faded actresses Blanche and 'Baby' Jane Hudson live together. Jane was by far the most famous when she performed with their father in vaudeville but as they got older, it was Blanche who became the finer actress, which Jane still resents. Blanche is now confined to a wheelchair and Jane is firmly in control. As time goes by, Jane exercises greater and greater control over her sister, intercepting her letters and ensuring that few if anyone from the outside has any contact with her. As Jane slowly loses her mind, she torments her sister going to ever greater extremes.