A meek, mild insurance salesman meets a rootless, manipulative stranger in the hospital, which initiates terrible and gruesome events that will change the salesman's life forever.

Molly begins to suspect that Lester is involved with the murders, but her new boss points her in a different direction. Meanwhile, Malvo investigates the blackmail plot against a man known as the Supermarket King.

Malvo flips the script on the blackmail operation, Molly sets a trap, and Gus debates whether he should come clean. Lester's return to work has complicated repercussions.

Malvo seeks answers, while Lester finagles a few of his own. Molly and Gus try to get past a setback in the investigation.

Molly faces pressure to close the case, while Lester starts to feel like a new man.