The Case of the Howling Dog

One afternoon, lawyer Perry Mason (Warren William) is visited by the visibly distraught Arthur Cartwright (Gordon Westcott). Cartwright's neighbor has a dog that won't stop howling, which he believes is a sign someone has been murdered. Cartwright wants his will amended, so his fortune will go to the woman currently living with his neighbor, and he wants the neighbor arrested. Mason realizes something is amiss when Cartwright suddenly disappears, and the will is mysteriously changed.