The protagonist and an unreliable narrator due to her amnesia. She is portrayed as resilient and determined to find the truth despite her grief and guilt.

Claire’s wealthy best friend. Though she initially appears to have it all, she is revealed to be cold, secretive, and deeply affected by her family’s dark history.

Claire is found injured on a hiking trail with no recollection of what happened. Kat and Jesse are missing, and an extensive search turns up no signs of them.

Kat’s powerful family, including her grandmother (a former Congresswoman), who prioritize reputation over the truth. Key Themes Kate's Review: “That Weekend” - The Library Ladies

Six months later, new clues suggest that Kat’s wealthy, powerful family may be involved in a cover-up rather than a kidnapping. The story eventually shifts perspectives to reveal a dark web of family secrets, including abuse and a "disturbing" final revelation. Major Characters