New York City. 1897. Sara Howard has opened a pioneering private detective agency. She reunites with formidable alienist Dr. Laszlo Kreizler and New York Times journalist John Moore to find the kidnapped infant daughter of a Spanish dignitary.
Old scores are settled. New alliances are forged. Lives are lost. Elliot is forced to make a choice that will define his entire future. And Sean makes a discovery about a traitor who has been in his midst all along.
With the stakes higher than ever, the Wallaces are forced to go into hiding. Luan risks his life to rid himself of Mosi. Floriana seizes an opportunity. Elliot attempts to save the life of a colleague.
The truth about Finn’s murder is revealed – and The Wallaces and The Dumanis will never be the same again. Meanwhile, Luan is forced to confront the deadly consequences of his actions. Elliot provides Vicky with enough information to make her move.
With the Wallaces retreating to a safehouse, Marian puts the pressure on Sean to uncover Finn’s killer – and Sean wrestles with who he has become. How far is he prepared to go in pursuit of the truth? Meanwhile, Elliot’s recuperation is interrupted by a new danger.
Hidden safely away in a farmhouse in the middle of nowhere, Darren wrestles with the chaos he has unleashed. But when a mysterious group of mercenaries set their sights upon him, will Kinney be able to get there in time to prevent bloodshed?