Penny for Your Secrets (Verity Kent, #3)

"The Great War may be over, but for many, there are still obstacles on the home front. Reconciling with her estranged husband makes Verity sympathetic to her friend Ada's marital difficulties. And when Ada's Marquess husband is discovered shot through the heart with Ada's revolver, it's up to Verity to prove Ada's innocence. But Verity is called upon for another favor: investigating the death of a girl who censored soldiers letters during the war."--Publisher.