The Rhythm Section (2021)

Stephanie Patrick is in bad shape after losing her family in a plane crash that should have happened herself. Unable to recover from the loss of her family for a long time, Stephanie learns that the incident was not actually an accident and goes crazy. She sets a purpose for living and takes the role of an assassin to go after those responsible for her family's death. Having assumed a different identity, Stephanie Patrick seeks to learn the hidden truths between what she knows and what she has been told.