I know that Agatha Christie participated in at least two more, The Scoop and Behind the Screen that the detection club made. Also in the beginning of the 30-ties originally. They were published as The Scoop & Behind the screen in 1983 in one volume. Dont know the publisher and it is probably difficult to get a hand on now. Possibly The Detection Club made some more that she did not participate in. Dont know about that.Hey, thanks, Kurben! I ordered a used copy of The Floating Admiral. My post at #9450, said I'd read Inherit the Dead, a collaboration of twenty story-tellers and a pretty good read, written more recently. And I think the proceeds go to help victims of violence. Do they do more than this one? Looked like there might be more than a few by The Detection Club. I wonder how many other possibilities are out there, waiting? Thanks again!