<P> Ladin was born in Houston, Texas and studied at the USC School of Dramatic Arts . He has guest - starred as William Hofstadt on multiple episodes of the AMC show Mad Men and the HBO miniseries Generation Kill as Corporal James Chaffin . He also appeared in the movies Toolbox Murders, Cursed, Left in Darkness . He is also the voice of the character Ellis in the cooperative first - person shooter game Left 4 Dead 2, as well as the voice of Cole MacGrath, the lead character of Infamous, in all media beginning with Infamous 2 . </P> <P> Ladin played Jamie Wright for two seasons in AMC's The Killing . He guest starred in Law & Order: SVU, episode "Rhodium Nights". </P> <P> Recently, he has garnered fame for his portrayal of J. Edgar Hoover in HBO's Golden Globe and Emmy Award winning series, Boardwalk Empire . </P> <P> Ladin is married to fashion designer and stylist Katy Ladin . The couple have a son named Maxfield David Ladin who was born on December 21, 2012 . Ladin is Jewish . </P>

Who plays j edgar hoover in boardwalk empire
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