Mr. Mercedes - Season 3

While Lou stands trial for Brady's murder, Bill takes on the case of a local author he admired who was murdered during a home invasion.

Morris meets with the woman who told him about John's money, and Antonio convinces Bill to take on a new case. Judge Raines makes an unexpected ruling in Lou's case.

Bill and Roland convince Holly to visit Lou and provide moral support as Lou's competency exam approaches. Jerome learns an interesting fact about one of Rothstein's former girlfriends, and Danielle learns about Morris cheating on her with Alma.

As Lou's case goes to trial, Lou further loses her grip on sanity. Jerome looks for the John Doe patient, while Bill and Holly worry that Lou isn't looking good. Morris wonders where Danielle went, and he and Alma move in on the Saubers.

Sarah calls Bill to the stand before Roland can, and Holly worries that her testimony won't help Lou. Alma approaches Marjorie to find the missing money, while Morris approaches Bill and Holly.

Holly and Lou testify in court, while Morris' plan to frighten Peter doesn't go as planned. Alma gets closer to Marjorie, and Bill breaks down after a call from his daughter.

Alma pays Andrew a visit when Morris gets nowhere with the bookstore owner. Lou's trial comes to a close, and Bill warns Tom that Peter is in over his head.

Holly takes on a questionable roommate; after receiving an unexpected visitor, Ida seeks advice from Hodges; Alma and Morris decide they need more leverage.

Bill and Jerome close in on Rothstein's killer, and Bill is dismayed when he learns about Holly's inheritance. Lou takes a job at Finders Keepers, and Alma and Marjorie have a heart-to-heart.

Bill gets a visit from his daughter, who has news for him. Peter tries to negotiate with Morris, who is still reeling after what happened to Alma.