Brainteaser has no wrong answers - but your reply could signal chilling revelation

Not only can brainteasers improve your lateral-thinking skills, they can also reveal 'hidden' aspects of your personality.

That's exactly what one aims to achieve as it asks players to figure out the answer to a woman's unsolved death.

While there's no wrong answer to the question, it is said serial killers all answer in the same way. Responding to the question, 'What is your favourite that always gets people that haven't heard it before?' on Reddit, one user said: "I heard that a lot of mental institutions ask this to people to see where their mental state is. There is no wrong answer, but apparently, all answer it the same way."

The question reads: "There are two sisters. They both go to their mum's funeral. While they are at the funeral, one of the sisters meets the man of her dreams. They spend all day together, and she can't believe how incredibly happy he makes her.

"They part ways at the end of the funeral, and both sisters go back home. The sister who met the man of her dreams earlier that day suddenly realises when she gets home that she forgot to get his contact information. A week later, the other sister dies. How did she die?"

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Suggesting a possible answer, one user said: "She was killed by her sister so she could go to the funeral and meet the guy again." Another user asked: "But if there's no contact information, how would she invite the guy?" A third user said: "I was thinking that they were twins, and the man of her dreams had been stalking her and accidentally killed her sister instead of her."

One more user added: "I thought the other sister killed the sister that met the guy so she can pretend to be that sister and have the dream guy..." Another user said: "The man is a stalker/serial killer. He killed the mom and the sister to be with the other sister."

According to the post, those who presume foul play was involved in the sister's death may have a dark outlook on life. One user questioned: "There is no wrong answer, so there are any number of ways she could have died. Maybe she was hit by a bus. Or had a heart attack. Why would you automatically assume her sister murdered her with no context of that given anywhere in the story?"