Peter Beren announced a new deal for the Peter Beren Agency with the Lyons Press for Douglas Miller, a frequent documentary filmmaker for the History Channel, Discovery Channel and Showtime: The Greatest Escape, in which he tells the story of the largest mass prison escape in U.S. history, the breakout of more than 100 Union officers from a prison considered escape-proof, sited in the Confederate Capitol of Richmond, Virginia, in 1864 — based on diaries, journals and other primary sources.