John Rhode 
Death of a Bridegroom 

Death of a Bridegroom, first published in 1957, is part of the series of mysteries featuring private detective Dr. Priestley. Author John Rhode, a pen name of Cecil Street (1884-1964), was a prolific writer of mostly detective novels, publishing more than 140 books between 1924 and 1961. In Death of a Bridegroom, Inspector Jimmy Waghorn investigates the death of a man found hanging in his workshop on the morning of his wedding day. Initially, the death is believed a suicide, but doubts begin to arise and Dr. Priestley is brought in to assist the police in solving the murder mystery.