Here are some author read-alikes. If you like the authors in bold, then most likely you will enjoy reading the authors listed below.
Jodi Picoult
Chris Bohjalian
Jacquelyn Mitchard
Ann Hood
Luanne Rice
Lionel Shriver
Sophie Kinsella
Helen Fielding
Jane Green
Sarah Mlynowski
Sarah Strohmeyer
V. C. Andrews
John Saul
Kay Hooper
Adele Geras
James Patterson
Lois Duncan
Karen Kingsbury
Lisa Tawn Bergren
Terri Blackstock
Donna Fletcher Crow
Francine Rivers
Sandra Brown
Heather Graham
Lynette Eason
Lori Foster
Karen Robards
Rick Riordan
Kelley Armstrong
Christopher Paul Curtis
Margaret Peterson Haddix
Philip Pullman
Lee Child
F. Paul Wilson
James Lee Burke
Barry Eisler
Reginald Hill
Vince Flynn