The Krays' Mad Axeman (also known as: The London Mob) is a 2019 film directed by William Kerley and starring Diarmaid Murtagh, Morgan Watkins and Elen Rhys. It is based on the play Jump to Cow Heaven by Gill Adams, itself based on the true story of Frank Mitchell, a convict and associate of the Kray Twins, who facilitated Mitchell's escape from prison in 1966 and are presumed to have ordered his murder later that year.