Hedda Krause, a young widow in search of a new rich husband, checked into the Menger Hotel in 1915 with a case full of jewels - and never checked out.  In 2017, Dini Blackstone gives ghost walk tours in San Antonio. Her favorite is the tale of Hedda Krause who, in Dini's estimation, perpetrated the world's longest con, dying old and wealthy. Hedda adamantly claimed a ghost apparition lured her into a long, dark hallway, and when she returned to her room, her precious jewelry had been stolen. Can Dini see another side of the story that is worth God's grace?

FBI cryptographer Eloise Marshall is grieving the death of her brother, who died during the attack on Pearl Harbor, when she is assigned to investigate a seemingly innocent letter about dolls. Agent Phillip Clayton is ready to enlist and head oversees when asked to work one more FBI job. A case of coded defense coordinates related to dolls should be easy, but not so when the Japanese Consulate gets involved, hearts get entangled, and Phillip goes missing. Can Eloise risk loving and losing again? 

When German bombs set London ablaze, BBC radio correspondent Hugh Collingwood reports on the Blitz, eager to boost morale while walking the fine line between truth and censorship. But the Germans are not the only ones Londoners have to fear as a series of murders flame up amid the ashes. The deaths hit close to home for Hugh, and Aleida needs his help to locate her missing son. As they work together, they grow closer and closer, both to each other and the answers they seek. But with bombs falling and continued killings, they may be running out of time.

When the Germans march into Denmark, Baron Henrik Ahlefeldt exchanges his nobility for anonymity, assuming a new identity so he can secretly row messages for the Danish Resistance across the waters to Sweden. American physicist Dr. Else Jensen refuses to leave Copenhagen and abandon her research-her life's dream. While printing resistance newspapers, she hears stories of the movement's legendary Havmand-the merman-and wonders if the mysterious and silent shipyard worker living in the same boardinghouse has something to hide. 

Left with an estate on the brink of bankruptcy after their father's death, Lady Marigold Fairfax and her brother open a private investigation firm marketed to the elite . . . to spy on the elite. Dubbed The Imposters, Ltd., their anonymous group soon becomes the go-to for the crème of society when they want answers delivered surreptitiously. But the many secrets Marigold learns about her peers pale in comparison to her shock when she and her brother are hired to investigate her best friend's father as a potential traitor.