In February 1843, Daniel M’Naughten was tried in London for the murder of Edward Drummond, the private secretary to Prime Minister Robert Peel. M’Naughten was laboring under the delusion that Prime Minister Peel was part of a system that was persecuting him. Only by shooting Peel could he end the torment. Drummond became the victim of these delusions when M’Naughten mistook him for Peel. The trial of M’Naughten, the verdict of insanity, and the aftermath made legal history.