Compared to a juicy murder trial, a case of feuding neighbors isn t exactly Perry Mason s cup of tea. But Arthur Cartright insists that Mason is the only one who can muzzle the howling hound that s driving Cartright crazy. But Perry doesn t realize just how crazy until he meets his client s neighbor. Clinton Foley says Cartright is barking up the wrong tree with his canine companion and swears that the man is dangerously insane to boot.Mason s t the type to cop out on a client but when Cartwright draws up a will that leaves everything to his neighbor s wife, even Perry has to wonder if the man has slipped from anger into madness. That s why he pays a personal visit to Clinton Foley s house, where he finds one missing wife, one poisoned dog, and one corpse.