The Lake by Natasha Preston Book

The Lake by Natasha Preston is a young adult thriller about two best friends, Esme and Kayla, who return to Camp Pine Lake as counselors-in-training. Years ago, they attended the camp as young girls and were involved in a terrible incident, a secret they've kept hidden for years. They're hoping for a fun summer filled with s'mores, flirting, and relaxing by the lake, but their past quickly catches up to them when they begin receiving threatening messages, one of which warns: "THE LAKE NEVER FORGETS". This triggers paranoia and fear, making them realize that someone at the camp knows their secret and is determined to make them pay for what they did. The novel unfolds as Esme and Kayla attempt to uncover who is behind the threats while grappling with the dark secret they've buried for so long.