Hunted

Hunted is a touching 1952 drama starring Dirk Bogarde. Bogarde is a man who has just killed his wife's boss for a suspected affair with his wife. A 6 year old orphan runaway comes across him right afterwards. The boy has run away from his abusive adoptive parents because he's in trouble -and not for the first time. This time he set the kitchen on fire. The rest of the film shows the changing relationship of the murderer and the runaway as they work to evade capture.

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The NYT has a mixed review. TCM has an overview.