The mail service is releasing a set of stamps with hidden clues to celebrateChristie, the iconic mystery author.
This year marks Christies 126th birthday and the 40th anniversary of her death.
At home detectives dont need to be the next Miss Marple to solve the crime.
Credit: Mammoth Screen/Lifetime
A magnifying class, some body heat, and UV light will crack the case.
Royal Mail
