A Certain Darkness

Set in the early 1920s, this mystery follows former British Intelligence agent Verity Kent and her husband Sidney as they navigate a series of dangerous investigations linked to wartime secrets and treacherous enemies. When a suspect connected to treason is murdered and a Belgian lawyer with valuable documents is killed aboard a train, the couple uncovers a web of espionage rooted in the aftermath of the Great War. As the stakes rise, they must outwit a formidable adversary to uncover the truth behind these intertwined cases.