The Big Law's intricate mechanics are set in motion by one fatal choice: Broker's naive ex-wife Caren decides to blow the whistle on her feckless husband, Keith Angland, a St. Paul cop who's moonlighting as an informant for the Chicago mob. Unwisely for her, she confides in Tom James, a disaffected reporter nursing dreams of the perfect crime. Seeing a way out of his dead-end life and into his dreams, Tom cajoles Caren into entrusting him with the suitcase full of greenbacks the mob had paid her informant husband. When Caren is killed, Tom frames Angland, absconds with the suitcase, runs to the FBI (known to its employees as the Big Law), and wangles himself a berth in the Witness Protection Program. Only Broker senses something amiss in Tom's testimony, and he sets out to find the truth. But to do that, he must find Tom, who has the Big Law and a big suitcase full of cash on his side.