A woman hears a knock on her door at midnight. She finds a stranger who claims to be her long-lost brother. How can she tell if he’s lying?
Category: Mystery · Difficulty: expert
Hint: Think about unique knowledge only a true family member would have.
Answer
He doesn’t know the family secret
Explanation
If he cannot recall a family secret, it indicates he might not be who he claims.
This is a expert mystery riddle — one of the harder riddles here. The answer is He doesn’t know the family secret.
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