Adapted for radio by John Wilson and produced by Stewart Conn, the play features a cast including Hamilton Dyce as Hugh Collins, Richard Findlay as Dougal, and John Baddeley as John Boyd .The plot centres on Hugh Collins, a socio-anthropologist whose work has taken him to various parts of the world. While aboard a ship off the coast of Africa, Collins witnesses the peculiar death of a man—a mystery that remains unsolved. Later, upon settling in Scotland, Collins encounters a figure known as "The Devil's Minister." This meeting unravels the enigma surrounding the earlier death, linking past events to present revelations .