#1 New York Times bestselling series

The tenth book in the #1 New York Times bestselling series that inspired the hit ABC Family TV show Pretty Little Liars.

In this suspenseful teen novel, four little liars are at it again. Aria's love life is on the Fitz—ahem, fritz. Emily's exploring her wild side. Hanna's kissing the enemy. And someone from Spencer's past—someone she never thought she'd see again—is back to haunt her. But none of that compares to what these pretty little liars did on their last spring break. It's their darkest secret yet. And guess who else knows?

Full of unexpected twists and shocking revelations, Ruthless is the tenth book in New York Times bestselling author Sara Shepard’s compelling Pretty Little Liars YA mystery series. 

• A Stalker Mystery: The girls thought they were free from their tormentor, but a new “A” has emerged, and this one knows the deadliest secret of all.
• High School Drama: Aria’s love life is a disaster, Hanna’s kissing the son of her father’s political enemy, and Emily is exploring a side of herself she never knew existed.
• Psychological Suspense: Spencer’s past comes back to haunt her in the form of a friend she betrayed, forcing her to confront the ruthless choices she’s made.
• Lies and Deceit: Just when they think they know the truth about what happened in Jamaica, a shocking revelation proves that in Rosewood, nothing is ever as it seems.