Historian Michael Esslinger thoroughly details the prominent events, inmates, and life inside the most infamous prison in American History. His research included hundreds of hours examining actual Alcatraz inmate files (including rare original documents from Al Capone, Machine Gun Kelly, and over a hundred others) exploring the prison grounds from the rooftop to the waterfront to help retrace events, escape routes, in addition to conducting various interviews with former inmates & guards. His study has resulted in detailed accounts of both the 1946 & 1962 Escape attempts. A definitive account of the 1962 escape of Frank Morris and the Anglin Brothers provides rare insight extracted through photos, and over 1, 700 pages of FBI investigative notes.