Boomerang: A Crime Novel, by Sidney J. Bounds (trade pb)

The happy camaraderie of the Porthcove Studios holiday hotel is shattered by the arrival of the misanthropic George Bullard. The unpleasant Bullard goes out of his way to taunt and annoy both staff and fellow artist guests. So when he's found brutally murdered, everyone in the hotel comes under suspicion as having a motive to kill him. And when a second guest is pushed down the stairs leading to the beach, the police are baffled--and it falls to the unorthodox lady detective Miss Isabelle Eaton to unmask the murderer. A first-rate British crime novel!