Historian of English criminal justice in the 19th and 20th centuries.
The Rise and Fall of the Rehabilitative Ideal, 1895-1970 (Routledge, 2019).
Nineteenth-Century Crime and Punishment (Routledge)
Vol. 1: Crime and Criminals
Vol. 2: Justice, Mercy, Death
Vol. 3: Next Only to Death
Vol. 4: Prisons and Prisoners