あらすじ
A British spy in East Germany, codename Thistle, uncovers a hidden USSR underwater base with a terrifying secret, blending deep-sea dread and psychological horror in a high-stakes thriller that will captivate fans of S.A. Barnes and Daniel Kraus.December 1984. SIS field asset Heidi Sperling (codename Thistle) exfiltrates from East Berlin with the sole copy of a critical intelligence leak: a naval log containing a solitary message received from a previously unidentified Soviet submarine. Incredulously—impossibly—it seems the vessel, known only as TK-15, has been sitting motionless and undetected in the waters between Scotland and Iceland for three whole years. And now this latest message reads: ACTIVE. Picked up by the Royal Navy’s submarine HMS Viking, Heidi is thrust into a black ops mission: find TK15 and neutralize it at any cost. But as her only ally on board the Viking falls sick, she realizes this modified vessel is far more than a Soviet experiment to gain an upper hand in the n