Double-Cross — George Douglas

When Miss Norah Allet, aspiring novelist, disappears from Colonel Crayle's guest house in the Yorkshire Dales, Detective Chief Superintendent Grant of the Hexford CID finds himself pressurised into a full-scale investigation. One of the other guests at Ramscote House is political journalist Henry Marsh, who possesses information which could, if published, plunge the country into the gravest of scandals. When Marsh's beloved great-niece Valerie is kidnapped, the two cases merge.