London cop Frank becomes dog-handler after colleague's death. His canine partner Rex intrudes on his home life with girlfriend Pat. Frank hopes killer resurfaces to solve case.

When his colleague is killed during a chase in Kentish Town, London bobby Frank volunteers to become a dog-handler. Rex, his new companion, starts to take over his home life more than expected, to the irritation of girl-friend Pat. Frank just hopes the killer will re-appear.—Jeremy Perkins {J-26}