Selena Alvarez/Regan Pescoli

The Montana series is a series of romantic suspense novels by American novelist Lisa Jackson . The series is also known as the “To Die” series (because “To Die” is in each of the book’s titles) and as the Selena Alvarez/Regan Pescoli series, being that they are the two main characters. Selena and Regan work for the Pinewood County Sheriff’s Department in Grizzly Falls, Montana and solve serial killings.