This series is really growing on me! The story that started in Ten Tiny Breaths continues with One Tiny Lie, but this novel focuses on Livie's life at Princeton while also continuing some of the story lines from Ten Tiny Breaths. 
 I really loved Livie's story, and seeing Livie on her own, away from the home she had in Miami. She and Kacey have so many differences, and I really liked that One Tiny Lie focused on Livie and how car accident and the events of TTB affected her. You got an inkling of it before, but there was something very different about an entire book focused on Livie's story. 
 Livie is one who strives for perfection, and doesn't want to let anyone down, and I can totally relate to that. But along the way, Livie realizes that it's okay to do what's right for her, and that she wouldn't be letting anyone down by not becoming a doctor or finishing her education at Princeton. 
 Livie does crack, and now that Kacey is okay, she's getting some help from good, old Dr. Stayner. Who actually sounds like he would be an awesome- but completely unconventional- psychiatrist. And it's nice that Livie has Dr. Stayner to challenge her perfection. Livie has her own demons, and that car accident that killed her parents affected her in a very different way. 
 And she and Ashton are so good together! They have their issues, and Ashton has something being held over his head and his own issues to work through, but I think it's why he and Livie are so cute together. There are quite a few obstacles in their way, of course, but I liked their journey together. 
 My emotions were all over the place with One Tiny Lie, but in a totally good way. I laughed and cried and smiled. It's not as emotional as Ten Tiny Breaths, but it's still pretty emotional. 
 Final Thoughts: I'm such a fan of K.A. Tucker now! One Tiny Lie has cemented my love of her books, and I am so very looking forward to continuing this series! I just love Livie's story and she is such an easy character to relate to. One Tiny Lie gets 5 stars.