In post-WWII London, the matchmakers of The Right Sort Marriage Bureau are involved in yet another murder.
In the immediate post-war days of London, two unlikely partners have undertaken an even more unlikely, if necessary, business venture--The Right Sort Marriage Bureau. The two partners are Miss Iris Sparks, a woman with a dangerous--and never discussed--past in British intelligence and Mrs. Gwendolyn Bainbridge, a genteel war widow with a young son entangled in a complicated aristocratic family. Looking to throw a New Year’s Eve soiree for their clients, Sparks and Bainbridge scout an empty building--only to find a body contained in the walls. What they initially assume is a victim of the recent Blitz is uncovered instead to be a murder victim--stabbed several times.