HBO MAXSERIESMOVIESNEW & LAST CHANCESCHEDULEMoreDocumentariesSpecialsSportsPodcastsSIGN INGET HBOMAXHBO MAXSERIESMOVIESNEW & LAST CHANCESCHEDULEMoreDocumentariesSpecialsSportsPodcastsSIGN INGET HBOMAXSIGN INStream all of HBO plus more TV, movies, and Max Originals at no additional cost.SIGN INHBO Max Boardwalk Empire About Season Season 1Season 2Season 3Season 4Season 5Dunn Purnsley Played by Erik Laray Harvey Although initially critical of Chalky White's swagger, Dunn Purnsley is now Chalky's right-hand man. His volatile nature can be a help as well as a hindrance for his boss.