Adrian Messenger, a famous writer, asks his friend Anthony Gethryn, a former British agent, to help him investigate the whereabouts of the people who appear on a list, without asking him the reason why he should do so.
While visiting her friend, Barbara Carlton, Frances Mildmay spends the day fox-hunting and ends up fogbound in the 'Devil's Maze' with Barbara's husband, James. When the pair lodge overnight at an inn, the innkeeper convinces James to seduce Frances. Unbeknownst to them, another family friend,...