be wary of strangers theme

The idea that we ought better be cautious around outsiders we do not know, is expressly stated or pointedly illustrated.

Examples

In talesoftheunexpected5x16 "A Man with a Fortune", Janet Murdoch met her doom after she set out to travel with the strange American John Smith and it turned out he was a psychopathic killer descended from a long line of psychopathic killers.

20 total · 4 choice · 10 major · 6 minor

StoryLevelMotivation
ftt1982e2x05 choice The obvious moral of the story is that strangers may be wolves out to eat you.
movie: The Night of the Hunter (1955) choice It seemed the point of the story was to caution that the vilest of people may come in the guise of the good.
shortstory: Little Red Riding Hood (1889) choice Charles Perrault sums up the moral of the story as follows: "From this story one learns that children, especially young lasses, pretty, courteous and well-bred, do very wrong to listen to strangers, And it is not an unheard thing if the Wolf is thereby provided with his dinner".
tz1985e3x17 choice Mrs. Wilkins warned her young son Danny multiple times about the dangers of fraternizing with strangers, but Danny disregarded her advice, and was very nearly abducted by an alien as a result.
ahh1x08 major The Mitchells' welcomed the stranger who saved their son's life into their home, and were nearly extorted out of $20,000 by him for their trouble. In his closing remarks, Alfred Hitchcock summed up moral of the story as follows: "If a stranger offers to save your life, think it over."
ahh1x17 major Karen refused to let a stranger into her home to use the phone, and was later assured she did the right thing by the deputy sheriff. Indeed, the entire story turns on whether she should have turned away the stranger at her door.
ahh3x06 major Stella and Emory briefly deliberated over whether to take in the drifter Jesse to help with the peach harvest. Though Jesse quickly showed signs of being a creep, Emory's greed was overridden by his better judgement to Stella's dismay.
ftt1982e3x03 major Two times Pinocchio got into trouble it was because he got hoodwinked by strange people he met in the street.
ftt1982e3x05 major Snow White fell afoul of two passers by, who were in fact the witch queen in magic disguise. She was admonished to not trust strangers.
talesoftheunexpected3x01 major Sylvia neglected to follow this age old advice to her peril.