Lies Between Friends (2010)

Fourteen years after college, a group of friends gathers for a bridal shower. Among them are Joss and Cait, Joss's best friend from freshman year, who have been distant ever since Joss discovered Cait knew her fiancé, who died in a motorcycle accident the night before. As part of a recovery process, Cait wanted to reconcile with Joss, but she dies before she can explain. Was her death accidental, a suicide, or something else?