On a Mission from God: The Definitive Story of The Blues BrothersIn Daniel De Visé's in-depth new book The Blues Brothers - An Epic Friendship, the Rise of Improv, and the Making of an American Film Classic, the author goes to phenomenal lengths to detail not just the making of the film, but goes back to the beginning, detailing the upbringings of the two actors, their explorations into a burgeoning comedy scene, their rise at SNL, and all the blues that's fit to print.