Atlee Pine is an FBI special agent assigned to the remote wilds of the western United States. Ever since her twin sister was abducted by a notorious serial killer at age five, Atlee has spent her life hunting down those who hurt others. And she's the best at it. She could be one of the Bureau's top criminal profilers, if she didn't prefer catching criminals in the vast wilderness of the West to climbing the career ladder in the D.C. office. Her chosen...

"Imogen and Beck, two sisters who couldn't be more different, have been friends with Tilda since high school. Once inseparable, over two decades the women have grown apart. But after Imogen survives a traumatic attack, Beck suggests they all reunite to hike deep into the Grand Canyon's backcountry. A week away, secluded in nature . . . surely it's just what they need. But as the terrain grows tougher, tensions from their shared past bubble up. And...