An unexpected menace threatens their newfound freedom...

Acquitted of the crime he was accused of, Adrian Croft begins an investigation that could link a duke to his sister's death. But when a fresh series of murders leads straight to Saint George's Hospital, Adrian is torn between his quest for revenge and the need to catch an active killer. Though he has sworn to yield his power in exchange for a pardon, all bets are off when dangerous men threaten his city.

Having proven her unfailing loyalty to her husband, Samantha Croft settles into married life - an idyll that quickly crumbles when she and Adrian become caught up in the murders. As they follow a trail through subterranean tunnels and uncover a secret organization, another threat emerges: a ghost from Adrian's past who is determined to bring war to their doorstep.

Danger. Espionage. Revenge. Forbidden love. A Regency romance like no other.