The Toll-Gate is a Regency novel by Georgette Heyer, which takes place in 1817.^[2] Unlike many of Heyer's historical novels which concentrate on a plucky heroine, this one follows the adventures of a male main character, an ex-captain in the British Army who has returned from the Peninsular War and finds life as a civilian rather dull. The setting for this detective/romance story is in and around a Toll-Gate in the Peak District, vastly different from the elegant backgrounds of London, Bath, Brighton, or some stately home, which characterize most of Heyer's Regency novels.

After acting as an aide-de-camp at the Battle of Waterloo, Jack Staple is finding civilian life tedious. Following a formal (and somewhat boring) dinner party in honour of his cousin's engagement, Jack sets out by himself on horseback to visit a more congenial friend some 60 miles away. After getting lost in the dark and rain he reaches a toll-gate where a frightened 10-year-old lad is acting as toll collector in the absence of his father. A combination of curiosity, compassion, tiredness, and dampness lead him to stay at the toll house overnight with a view to sorting out the situation in the morning.

Over the next few days Jack's circle of acquaintances rapidly expands to include a highwayman, a Bow Street runner, and the local gentry plus their devoted retainers. Other complications include a dead body, stolen treasure, and some masked villains. In the process of preventing a scandal, Jack also manages to identify the murderer, deal with the villains, retrieve the treasure, satisfy the law, provide for his friends, and resolve his own romance.