Our Darkest Summer by Hanga E. Pavel

When Kinsley Green is forced to spend a week away with her former rival, her plan is simple: avoid Thomas Rhodes at all cost. With parties every night and a lake to disappear into, it should be easy...except all that changes when someone leaves a chilling threat on their door.

Determined to get answers, Kinsley starts digging, and what she finds makes it impossible for her to look away.

Thomas Rhodes returned to Coldwater with one goal: prove the police wrong and uncover the truth about his mother's disappearance. But what he didn't plan for was Kinsley—the girl he was supposed to stay far away from.

When their taunting stalker strikes, the stakes rise, and the get-away spirals into a deadly hunt for the truth. With each unraveling lie, the mystery spreads, and their shared history resurfaces, testing not only their knowledge, but their hearts.

Navigating their tangled emotions, the two fall deeper into the web of secrets surrounding the lakeside town, and soon, it becomes terrifyingly clear: someone will do anything to keep the past buried.

Can Kinsley and Thomas rely on each other to solve the decade-old case before their stalker strikes again, or will they become the next mystery to be solved?