Two Englishmen plot a desperate escape to free their Russian wives from Soviet confinement. Their plan hinges on a perilous sea voyage, navigating treacherous waters and evading Soviet authorities who are determined to prevent any defection. The narrative framework appears to follow the men's clandestine efforts, detailing the risks and the intricate steps required for their wives' freedom.

The premise of "Two If by Sea" sets up a classic Cold War thriller, focusing on a high-stakes escape. The narrative likely emphasizes suspense and the ingenuity required to outwit a powerful state apparatus. Readers can expect a story driven by the protagonists' determination and the inherent dangers of their mission. The plot suggests a tense, character-driven exploration of personal freedom against political constraints.