Police Dog (film)
Plot
Plot
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Constables Mason and Lade spot a burglar leaving the scene of the crime and both give chase, but Lade is badly shot by the burglar before Mason can catch up. Back at the police station Mason befriends Rex, a stray Alsatian dog recently brought in by another officer. Now living abroad, its owners agree to donate it to the police and it and Mason begin training together, causing tensions back home with Mason's girlfriend Pat Lewis, daughter of his landlady and her late policeman husband – Pat resents being unable to treat Rex as a pet and his drawing Mason's attention away from their relationship. Rex and Mason complete their training and go on patrol on the streets of [Hampstead](/wiki/Hampstead "Hampstead").

In the meantime, Lade has died of his injuries and his killer continues to lie low, taking on temporary work at a builder's until the CID arrive and he has to flee. Mason and Pat's relationship becomes more and more strained and he decides to move himself and Rex out. Soon afterwards he and Rex are deployed to a factory where Hill's still\-armed killer is breaking into a safe. They pursue him, with Rex holding onto the killer long enough to make an arrest. Meaning to meet Mason for a final discussion about their relationship, Pat arrives at the crime scene and instead reconciles with both Mason and Rex.


Who are Constables Mason and Lade?