The teen mystery, based on a series of Sara Shepard novels of the same name, will return in the winter.
Speaking about The Lying Game's chances of renewal last month, lead actress Alexandra Chando said: "We feel great about [the future]. Our ratings have been really great. We love this show."
She also suggested that The Lying Game "could take on a whole new direction" after the events of the season finale.
Fellow cast member Charisma Carpenter recently told TV Line that she will return as Rebecca Sewell if asked.
The Lying Game, which also stars Adrian Pasdar, Blair Redford and Allie Gonino, is broadcast in the UK on 5*.
> Alexandra Chando: 'I prefer to be surprised by The Lying Game plots'