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 police dog that's driving Cartright crazy.
Perry doesn't realize just how crazy until he meets his client's neighbor, Clinton Foley. Foley says emphatically that Cartright is barking up the wrong tree with his canine complaint - and swears that the man is dangerously insane to boot.