At Harper's Ferry by Paul Westwood
Price: Free! 68530 words.
Published on August 24, 2011. .
Jack Blackwood is a widower and a drunk. Ezra Miller is an ex-slave in a white man's world. Together, they run a detective agency in Washington DC. As the Civil War looms, they are given their hardest case yet: A retired congressman asks them to find his missing son and the Union plans that could change the very course of the war against the South.