At the Sign of the Crippled Harlequin - Norman Robbins - Bog

In a guest house in the Peak District, Marjory Pike is wrongly identified by another guest as the author of a book declaiming certain mediums, one of whom had committed suicide as a result. The son of the deceased medium is staying at the guest house, so when he arrives bruised, and Marjory is found dead, the finger of suspicion points at him.