Four went in, one came out.It was meant to be their last hurrah. Four friends spend their senior Spring Break of high school hiking the Yosemite forest. Alone for one week where they can prove that, despite their cracked relationships, they're still a team. And maybe recapture some of the magic that brought them together in the first place.But something went wrong. One by one they're murdered, until only one survivor emerges from the forest. He says he's innocent. The evidence says he's not.Now he's on trial for the deaths of his friends, fighting for his life and freedom. It doesn't matter that he loved them fiercely, one as a friend, one as an ex, and one that still tangles his soul. The only thing that matters is his final words weren't "I love you," they were "I'm sorry."Told from past present perspective, ONLY THE TREES KNOW is a story of untangling friendships: lies, misunderstandings, broken promises, and twisted love.