1930s or 1940s vet murders women at dog show

After a failed bank robbery, an ex-con, an ex-waitress and a few of their friends train a pack of doberman dogs to rob a bank for them.

A more than slightly incompetent private eye inherits five doberman pinschers. The dogs at first create havoc with Alex's home and personal life, but soon become trusted allies and on more than one occasion help Alex solve cases.