Exclusive First-Look: The Lying Game's Mysterious Promo Revealed

"A lost twin. A dark secret. A deadly game:" That's the slogan for ABC Family's upcoming summer show The Lying Game.

Exclusive: Heroes' Adrian Pasdar to play papa in ABC Family's The Lying Game

In our exclusive first look at the promotional poster, Alexandra Chando cautiously sneaks down the stairs as Emma, one of two identical twin sisters she plays in the series. She holds the secret that she knows about Sutton, who was separated from her at birth: the two have switched places! But the fun and games are over when Emma, who just wanted a taste of her sister's privileged life, realizes Sutton has gone missing. Does Emma come clean about her identity to try to locate Sutton or continue with the deception in hopes of learning more about why they were separated in the first place?

Exclusive first look: Photo shoot with the stars of ABC Family

The Lying Game premieres Monday, Aug. 15 at 9/8c on ABC Family.