Thriller novelist Tess Gerritsen has inked a book deal with Ballantine Bantam Dell to publish two more Rizzoli & Isles books. The deal also included an e-original story called “John Doe.”

The books follow the adventures of homicide detective Jane Rizzoli and forensics pathologist Dr. Maura Isles, the inspiration for the TV series Rizzoli & Isles–just renewed by TNT for its fourth season.

Jane Rotrosen Agency agent Meg Ruley negotiated the deal with publisher Libby McGuire and editorial director Linda Marrow.