An April Shroud

This is the fourth novel in the Dalziel and Pascoe series, which was made into a hugely popular BBC TV serial. Supt Dalziel is rescued from a flood by a group of mourners. Bonnie Fielding seems far from worried about her husband's demise and Dalziel soon begins to fall for her, ignoring his suspicions. Soon her mansion is littered with corpses and Pascoe must rescue Dalziel from making a fool of himself.