The Case of the Mischievous Doll (Perry Mason Mysteries (House of Stratus))

A mysterious young woman, Dorrie Ambler, wishes to prove her identity to Perry Mason. She wants him to witness her appendectomy scar, claiming she has a double. The double turns out to be Minerva Minden, madcap heiress of Montrose. Mason has his work cut out for him when his investigation leads him to a dead man in an apartment building. Dorrie Ambler suspects madcap heiress Minerva Minden wants a "Patsy" for another woman's hit & run crime. They look alike, they act alike and the resemblance is close enough that Mason begins wondering who he's actually representing. Accompanied by private detective Paul Drake, his investigation takes him all across town picking up leads, and coming within arm's reach of a killer. The look alikes both hire and lie to Mason. The car used was stolen for a getaway. For immunity from prosecution, thief Dunleavey Jasper claims Minden shot Ambler.