Factual error: Dr Lamb is about to use the electrotherapy on Newgate. As he approaches Newgate, the electrodes spark as though the switch has been flipped to engage the electricity. Lamb then puts both electrodes into one hand, but there is no reaction as there should have been with the electrodes connecting.
Factual error: Newgate makes a reference to Mickey Finn's name being the same as that of a Chicago bartender who used to drug his patrons with knockout drops. However, the film is set in 1899, but the real Mickey Finn wasn't caught until 1903.
