The fifth and final season picks up almost two years after season 4. Now a grown man, Norman lives a double life: publicly, he's a happy and well-adjusted member of the White Pine Bay community, but at home he struggles; his violent blackouts continue to increase as ‘Mother’ threatens to take over his mind completely. Meanwhile, Dylan and Emma have been living their lives blissfully unaware of Norman’s full on descent into psychosis, and a vengeful Alex Romero hungers for a chance to destroy his stepson and avenge the murder of his one true love. In addition, new faces including the iconic Marion Crane, Madeleine Loomis and her husband Sam Loomis, and Sheriff Dana Greene become entangled in Norman’s life causing a chain of events that could blow the lid off his secret life.
Norman tries to keep up appearances despite a troubling discovery; Dylan and Emma receive a surprise guest.
Norman's date doesn't go as planned; Romero's frustrations reach a boiling point; Chick brings Norman a gift.
Norman helps Chick with a project; Romero makes his move; an apologetic Madeleine reaches out to Norman.
Norman learns who he can rely on as he attempts to protect his secrets; Romero struggles to find safety.
Norman tries to piece together Mother's movements; in Seattle, Dylan and Emma confront an ugly truth; Sam's girlfriend, Marion, makes an impulsive decision with far-reaching consequences.
A special guest checks into the motel; Dylan grapples with devastating news; Sam and Madeleine's marriage reaches a crossroads.
Norman and Mother are brought together as trouble looms large; Romero convalesces with the aid of an old friend; Dylan returns home.
Mother uses tough love to protect Norman; Sheriff Greene opens a murder investigation; Dylan gets help for his brother.
Norman's legal problems worsen; Emma takes care of family business as Dylan finds himself caught between his past and his future; Romero begins his plan for revenge.