One of the world's most popular authors is going back to where it started in his new book. 

John Grisham is releasing a sequel to the book which launched his career: ‘The Firm.’  

The legal thriller, which was released in 1991, was adapted into a film starring Tom Cruise. 

It's sequel ‘The Exchange’ picks up 15 years later with the same characters.  

Grisham told Mike Hosking that the book sees main character Mitch McDeere —an international lawyer— going around the world.  

He says parts of the book take place in Rome, Libya, London, and Istanbul.   

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