The Clue Hidden in the Alibi of the Murder Suspects

Riddle:

Mr. Steve was murdered on Sunday. The maid, butler, cook, lifeguard, postman, and his wife all had alibis. Who is lying?

Answer:

The postman — Mail isn’t delivered on Sundays, so his alibi is impossible. The riddle requires attention to real-world routines and rules, not just character logic.