The project is based on the Gillian Flynn novel that centers on Libby Day (Charlize Theron), a woman who is still haunted by the massacre of her family 25 years prior. She testified in court that her brother was the killer. Libby is forced to face her past once again when an organization known as The Kill Club begins investigating the case, trying to prove her brother's innocence. Nicholas Hoult is portraying Lyle, the awkward treasurer of The Kill Club.
Gilles Paquet-Brenner (Sarah's Key) is directing from his own adapted screenplay, based on the Gillian Flynn novel. It isn't known when production will begin.