Former Prussian soldier Herman "Baron" Lamm (1890-1930) adapted his military training to a much less noble occupation after moving to America, developing a reputation as one of history's most brilliant and efficient bank robbers. Lamm's time fell between Butch Cassidy and John Dillinger's notorious careers, and Lamm never received the attention of the two famous gunslingers. This first full-length biography promotes Lamm from his supporting role, tracing his criminal exploits and his pioneering use of concepts like "casing" a bank and planning escape routes. Analysis of arrest records finds...