The Case of the Postponed Murder by Erle Stanley Gardner & Gideon's Men by J.J. Marric (Very good, 1973, HC, 302 pgs, Detective Book Club)

The Case of the Postponed Murder: When Mae Farr becomes the presumed stalking victim of wealthy playboy Penn Wentworth, she asks Perry Mason for help. Wentworth says he merely wants her for forging his name on a fat check. Farr claims he just wants her. Enter Harold Anders, a love-struck suitor from Mae's small hometown who's determined to ride to her rescue. But fatal gun play leaves Wentworth dead, Mae a wanted woman and Perry Mason in trouble...

Gideon's Men: is a classic police procedural that balances Commander George Gideon’s intense workload at Scotland Yard with the personal, off-duty lives and struggles of his police officers. Gideon digs into old case files, convinced that the murder of a woman named Rosamund Lee is connected to the murder of Mrs. Entwhistle three years prior. He works tirelessly to uncover the true killer and free Mr. Entwhistle, who was wrongfully imprisoned for the crime. Gideon and his men are forced to deal with city-wide crises, including collapsing buildings, neglectful landlords, and violent tenant protests. These events draw in the Ministry of Housing and raise major questions about the structural integrity of city buildings.