Clockmaker by day and thief by night, Arthur Winfield is used to charming his way into the homes and pocket books of London's wealthiest patrons. He robs the rich to fund projects designed to help those in need and uses the nobility of his goal as an excuse for the continuation of his thieving. Little does he know that his latest mark may well be his last. Lord Percival Brien's wealth has acquired him a reputation for being one of the richest men in London. Solicited to ferret out the thief who robbed his uncle, he walks into Arthur's shop with one purpose: divining whether or not the man he is looking for is the pretty-faced clockmaker in front of him. As he builds a friendship with Arthur, he may find that their tastes run to more intimate tracks than steam trolleys and airships.