Paul Halter is a writer of crime fiction known for his locked room mysteries. Halter pursued technical studies in his youth before joining the French Marines in the hope of seeing the world. Disappointed with the lack of travel, he left the military and, for a while, sold life insurance while augmenting his income playing the guitar in the local dance orchestra. He gave up life insurance for a job in the state-owned telecommunications company, where he works in what is presently known as France Télécom. Halter has been compared with the late John Dickson Carr, generally considered the 20th century master of the locked room genre. Throughout his nearly thirty novels his genre has been almost entirely impossible crimes, and as a critic has said "Although strongly influenced by Carr and Christie, his style is his own and he can stand comparison with anyone for the originality of his plots and puzzles and his atmospheric writing."