I've mentioned it in my reviews before but... I. LOVE. KARA. THOMAS! This is the last book of hers that I had left to read that was written by her, and it didn't disappoint. The Darkest Corners gave me major Gillian Flynn vibes, who happens to be another favorite author of mine!
Tessa left Fayette, Pennsylvania with the goal of never returning. But when her incarcerated father passes away, she is forced to return and face everything she painfully left behind. When Tessa left, she drifted apart from her best friend, Callie. Callie's family welcomes Tessa with open arms when she returns to town, which causes the two girls to reconnect and remember everything that happened before Tessa left- including when they both were forced to testify that they saw Wyatt Stokes kill Callie's cousin, Lori. Both girls question what they actually saw that night, and begin to uncover secrets that bring them extremely close to danger.