The Secrets We Keep — Liz Milliron

June, 1943 Betty Ahern isn't a novice PI anymore. After solving several dangerous cases, she is hired for what she hopes will be simpler one. A soldier home from Europe on medical furlough wants her to find his birth mother. Left at a church and raised an orphan at Father Baker's Home for Boys, his only clue is a silver St. Christopher medal with a French inscription on the back. 

Betty tracks down the unmarried daughter of a wealthy businessman who mysteriously vanished from society for several months in the early 1920s.  Against her better judgment, Betty tells her client, who rushes off to meet her. But when the woman is found murdered, and her client is arrested for the crime, Betty must switch from locating a missing mother to clearing his name. 

Aided by some new partners, Betty once again delves into the secrets of Buffalo's elite. What she finds threatens to rip open secrets long buried. Can she find a killer and reunite a family? Or will the hunt cost Betty and her client everything, including their lives?