This drama focuses on the New Year's Eve disappearance of a high-profile resident of Summit, Utah - and the 4-year effort of law-enforcement and civilians to know the truth behind the crime.
Celebrated children's author Olivia Lake befriends a would-be artist named Joel, and connects with Eric, a con man.
As his relationship with Olivia heats up, Eric weighs whether to come clean about his original intentions.
Eric's sister Petra queries police about Olivia's case, and heads south to appeal to Joel for help.
Joel's New Year's Eve whereabouts come under increased scrutiny.
Joel weighs his options as evidence against him mounts; Eric is dogged by new allegations.
Petra treads on dangerous ground in her attempt to solve the Mosaic puzzle.