The provided text is comprised of excerpts from the novel Twice a Spy by Keith Thomson, a work of fiction detailing a high-stakes global espionage plot. The narrative follows Charlie Clark, a reformed gambler, and his father, Drummond Clark, a former CIA officer suffering from Alzheimer's, who are on the run after being falsely implicated in a massive explosion. They are trying to rescue Charlie's girlfriend, Alice Rutherford, an ex-NSA agent who has been kidnapped to force the Clarks to retrieve a portable nuclear device known as an ADM (Atomic Demolition Munition). As the Clarks travel from Switzerland to Martinique, they are pursued by the remnants of Drummond’s ultra-secret CIA unit, the Cavalry, and their operatives like Stanley and the hired pilot Bream, whose motives and loyalties—including Alice’s complicity in the whole plot—are complex and shifting.