Godwin's peculiar interest was in criminal psychology, and he concentrates on the dramatic conflict between the murderer and the detective. An unusual turn is given to the story by the fact that the criminal is the pursuer instead of the pursued. Godwin intended later in life to write a romance based on the story of Eugene Aram, the philosophical murderer; and his careful notes on the scheme are said to have been utilised by his friend, Bulwer Lytton, in his novel of that name. Caleb Williams helped to popularise the criminal in fiction, and Paul Clifford, the story of the chivalrous highwayman, is one of its literary descendants.
Birkhead, Edith. The Tale of Terror A Study of the Gothic Romance (p. 63). Kindle Edition.
"Godwin" here is William Godwin, who married Mary Wollstonecraft. Their daughter, Mary Godwin, married Percy Bysshe Shelley.
Bulwer Lytton's novel Paul Clifford is famous -- or infamous -- for its opening line:
It was a dark and stormy night. . . . .