His 1978 (rev. ed. 2001) biography of Admiral Thomas Cochrane, 10th Earl of Dundonald highlights the characteristics of that individual which served in large part as inspiration both for C. S. Forester's Horatio Hornblower, and for Patrick O'Brian's Jack Aubrey. In 1994, his "Hanged in Error?" provided an overview/investigation as to the likely guilt of seven individuals all hanged in the UK before its abolition as a means of capital punishment in 1965. The book dealt with the cases of Timothy Evans, John Williams (alias George MacKay, hanged in 1913 for the fatal shooting of Inspector Arthur Walls in Eastbourne during a burglary attempt), Edith Thompson, Robert Hoolhouse, Neville Heath, Charles Jenkins (hanged in 1947 together with Christopher Geraghty for fatally shooting Alec de Antiquis following a botched London jewel robbery), and James Hanratty. (N.B. This is not the same as the similarly titled 1961 book "Hanged in Error" by Leslie Hale, which contains a different set of case histories.)