Post Mortem, first published in 1953, was the best-known novel published by Guy Cullingford (actually a woman called Constance Lindsay Taylor). It's a detective story narrated in the first person by an amateur sleuth. The unique feature of the story is that the narrator is investigating his own death. Yes, that's right, this is a case investigated by a ghost...
The deceased is Gilbert Worth, a moderately successful novelist who was a rather unpleasant fellow, which meant that several people had reason to wish him dead. The prime suspects are members of his family (wife, daughter and two sons) along with his mistress. The supporting cast includes his publisher, the family lawyer, and a number of servants including a bolshy gardener.
The tone of the story is fundamental, and it's relentlessly ironic. I was struck by the thought that one could easily imagine Richard Hull writing this story. It bears many of his hallmarks, including a focus on unattractive characters. Gilbert might have been a nasty piece of work, but he gets his come-uppance, not only as a victim, but also because he finds out what people really thought of him. The humour won't be to everyone's taste, but I was amused when I reread the story recently, having been slightly less impressed when I first came across the book many moons ago.
I thought that the idea for the novel was clever, but one that was difficult to execute successfully. (And Hull is a good example of someone who came up with splendid ideas, but did not always manage to turn them into effective full-length novels). But to my mind, Cullingford does a really good job of maintaining interest from start to finish. It's an unusual piece of work by an author of considerable accomplishment.