90 Day Fiancé: Before the 90 Days

After 18-year-old Laetitia's family discovers her abandoned scooter, detectives launch an exhaustive search. While local repeat offender Tony Meilhon quickly emerges as the prime suspect, he stonewalls the investigation, forcing the police to refocus their efforts on reconstructing Laetitia's final moments. Back in 1995, the twins' home life deteriorates.

With Meilhon in temporary custody, the detectives intensify their efforts to keep him behind bars permanently, questioning those closest to Laetitia about her recent state of mind -- including her devastated twin sister Jessica. In 1996, the twins begin a harrowing journey of displacement after their mother checks herself into a clinic.

As the days continue to pass without any sign of Laetitia, Jessica grows increasingly distraught -- prompting Detective Touchais to throw himself deeper into the victim's habits. Meanwhile, Laetitia's case catches the attention of the president, and later, both the twins' and Meilhon's volatile childhoods are explored.

After a partial break in the case, the highly troubling pathology report drives an irreparable wedge in public opinion of the legal system. Now facing increased pressure to solve the case, Detective Touchais leans on Béatrice Prieur, the twins' longtime social worker, for more information about their past. In 2005, Laetitia and Jessica meet the Patrons.

After Jessica reveals a memory about her sister and Meilhon suddenly starts talking, Touchais scrambles to fill in the outstanding gaps. As crucial pieces of Laetitia's case begin to take shape, disturbing details come to light about someone close to the teenagers.

As disturbing new allegations surface, Béatrice meets with Touchais to share the full extent of her complicated history with the twins. Later, Jessica confronts her birth and adoptive parents for her own peace.