In the novel Why Didn't They Ask Evans?, Dr Thomas is a physician in Marchbolt. He is a golfing partner of Bobby Jones, and was present when Bobby found the body of Alan Carstairs. Thomas assessed that the man was about to die. His back was broken and there was nothing they could do to help. He went off to get help in moving the body up the cliff face and asked Bobby to stay with him, just in case he regained consciousness.