Publisher's Synopsis
The Double-Dealer is built around the schemes of a man named Maskwell who attempts to marry another man's bride and become the heir to an estate that he has no claim to. When Maskwell finds out that Mellefont is in love with Cynthia and hoping to marry her, he decides to ruin his reputation. He convinces Cynthia's father's wife that Mellefont actually wants to sleep with her. He convinces Mellefont's uncle that Mellefont is sleeping with his wife, Lady Touchwood.