John Grisham, The Firm, 1991

The Firm is a 1991 legal thriller by American writer John Grisham. It was his second book and the first which gained wide popularity. In 1993, after selling 1.5 million copies, it was made into a namesake film starring Tom Cruise, Gene Hackman and Jeanne Tripplehorn. Grisham's first novel, A Time to Kill, came into prominence afterwards due to this novel's success. [Source]

For a young lawyer on the make, it was an offer Mitch McDeere couldn’t refuse: a position at a law firm where the bucks, billable hours, and benefits are over the top. It’s a dream job for an up-and-comer—if he can overlook the uneasy feeling he gets at the office. Then an FBI investigation into the firm’s connections to the Mafia plunges the straight and narrow attorney into a nightmare of terror and intrigue. With no choice but to pit his wits, ethics, and legal skills against the firm’s deadly secrets—if he hopes to stay alive. [Source]