This is a 1936 novel written by Richard Webb and Hugh Wheeler under their Patrick Quentin pseudonym. Webb and Wheeler, who were very prolific and co-authored many stories, have multiple pseudonyms, including Q. Patrick, Patrick Quentin, and Jonathan Stagge. This is the first book of their amateur detective Broadway theatrical producer Peter Duluth series. Having read a set of story stories featuring Lieutenant Timothy Trant (another one of the series detectives created by Webb and Wheeler writing using the pseudonym Q. Patrick), I was looking forward to read a Peter Duluth story. I was very disappointed with this book. While the plot is interesting, it is probably more suitable for a short story rather than a full-length novel. I find the book drags on quite a bit (especially in the middle). The fact that the whole book is geographically confined to things that happen in one sanitorium probably does not make it easy for the author. In addition, I find Duluth a very average and ineffective amateur playing detective instead of an amateur detective. In fact, in the end, even though Duluth’s logic and chain of reasoning turned out to be generally correct, his conclusion was totally wrong and he actually accused the wrong person as the murderer. Thankfully, someone else was there to correct his mistake and solved the case for him. Also, instead of having the detectives solve the case by following clues and analyzing facts, the detectives in this case just announced the findings at the end, with a lot of lucky speculation. The title of the book refers to Duluth’s comment on the murder plot, which he believes would be very obvious if it is not so foolish no one will believe it.
Spoiler Alert. The setting of the book is in early 1930s somewhere near New York City. Peter Duluth, a successful Broadway producer, became a serious alcoholic after losing his wife in a tragic theater fire. He decided to go into rehab and checked himself into a sanitarium called Sanitarium of Dr Lenz, which mostly works with mental patients although Dr. Lenz also takes in patients with lessor problems. While Duluth was there, be started hearing voices saying “There will be Murder”. As he looked into the matter, he discovered other patients also have similar experiences and soon there was an epidemic of fear among the patients. Later, one of the attendants, Jo Fogarty, was found dead under suspicious circumstances. In the meantime, Duluth fell in love with a fellow patient, Iris Pattinson, who was suffering from depression after having witnessed her father commit suicide after losing his fortune in the stock market crash. Her father blamed his loss on a co-investor, millionaire Daniel Laribee, who also happened to be a patient in the same sanitarium. After Laribee was found stabbed to death in a dark auditorium when the whole patient population were there watching a movie, and Iris was found holding the knife and sitting next to Laribee, Iris was the natural suspect. Duluth decided to save her. He finally figured out the real murderer of both Jo Fogarty and Daniel Laribee was Laribee’s son-in-law (who Laribee has never met). The son-in-law was both an accomplished parlor magician and a one-time medical school student. Under Laribee’s will and trust documents, if Laribee were to die or be declared insane, his estate would go to his daughter. Therefore, the son-in-law, who now called himself Martin Geddes, checked into the sanitorium as a patient (with no one knowing his true identity). His original plan was to use his skill as a ventriloquist to make Laribee hear voices to try to scare him insane. However, after Geddes arrived at the sanitorium, he discovered Laribee (who was a widower) was falling in love with a nurse called Isabel Brush. Concerned that Laribee might marry Brush and change his will to write his daughter out, Geddes decided to kill Laribee. Given the history between Laribee and Iris’s father, she is a natural scapegoat. Therefore, Geddes decided to frame the murder on Iris. In the final denouement scene held in Dr. Lenz’s office, Duluth expounded on his theory of the son-in-law, which is correct, but was totally wrong in determining who is the son-in-law. He mistakenly believed it was one of the doctors in the sanitorium, Dr Moreno. After Moreno proved he cannot be the murderer, Duluth was devastated. Thankfully, Dr. Lenz came to the rescue. Using the same general logic as Duluth, but using better deduction, Lenz was able to conclude the murderer son-in-law is one of his patients, Martin Geddes. Geddes also had to kill Jo Fogarty because he recognized Geddes as a ventriloquist he has seen performing before.