A smartly dressed driver on his own picks up a scruffy, wild-eyed hitch-hiker. As they drive off together, they hear warnings on the car radio of a dangerous serial killer on the run - the ""will-o-the-wisp"" murderer is said to be of slight build with fair hair... a description which clearly matches the hitch-hiker.
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Ready to Watch Tales of the Unexpected, Season 7, Episode 5?