Someone knows
(Book)

Allie Garvey is heading home to the funeral of a childhood friend. Allie is not only grief-stricken, she's full of dread. Because going home means seeing the other two people with whom she shares an unbearable secret. Allie has been haunted for two decades by what she and the others did, and by the fact that she never told a soul. The dark secret has eaten away at her, distancing her from everyone she loves, including her husband. Because she wasn't punished by the law, Allie has punished herself, and it's a life sentence. Now, Allie stands on the precipice of losing everything. She's ready for a reckoning, determined to learn how the prank went so horribly wrong. She digs to unearth the truth, but reaches a shocking conclusion that she never saw coming - and neither will the reader. --,(source of summary not specified)