If you like John Grisham, you may want to try
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Jay Brandon
William J. Coughlin
Rankin Davis
Jeffrey Deaver
Philip Friedman
Stephen Greenleaf
Lee Gruenfeld
Clifford Irving
John T. Lescroart
Paul Levine
Steve Martini
Perry O’Shaughnessy Barbara Parker
Richard North Patterson
Nancy Taylor Rosenberg
Lawrence Sanders
Lisa Scottoline
Scott Turow