 He also wrote a series of satirical books ranging from "The Jesus File", dealing with the crucifixion of Christ as recorded through the paper-work and internal correspondences of the Roman Garrison, to "How Britain Won The Space Race", which he co-wrote with celebrated amateur astronomer Patrick Moore.Desmond Leslie was briefly a screenwriter/director for film and television.During financial difficulties during the production of "Stranger At My Door", Leslie opted to compose the music for the film himself.