A trusted family friend picks up Jan after school to go horseback riding, but as nightfall looms and they're still not home, what seemed like a casual afternoon slowly turns nightmarish.

The search for Jan escalates as the Brobergs call in the FBI; Jan is tasked with a disturbing life-or-death responsibility.

The Berchtolds and Brobergs grow closer, but as Mary Ann and the girls fall under the spell of their fun-loving neighbour, Bob sees him as a threat.

The Brobergs fight to restore normalcy as they prepare to face B. in court; Jan's anxiety about the mission snowballs with time; Mary Ann's unanswered questions about Mexico and growing disconnect with Bob lead her to a gut-wrenching decision.

When the Brobergs' marriage is thrown into jeopardy, Bob and Mary Ann must face the terrible consequences of their mistakes; B. strengthens his sinister hold over Jan.

In Jackson Hole, Jan finds herself overwhelmed by the demands of the mission; Bob and Mary Ann organise an aggressive legal strategy to bring her home.