'Pain & Gain': Who Plays Who in Dark Comedy Based on Miami Kidnapping?

Ed Du Bois, seen here, is the private investigator Marc Schiller called from the hospital after surviving the murder attempt by his captors. Du Bois says he didn't know what to make of Schiller's tale, but warned him that, if it was true, he should leave the hospital as soon as possible, because the gang would try to kill him again. (investigators-inc.com)