Taking the stage for their first time with a band, Idol hopefuls sing their hearts out in their last chance to make it into the Top 24. In the Final Judgment, two pairs of contestants face off in a sing-off.

When a man resembling Murdoch is shot, he must find the killer before the killer finds him.

On holiday, little Gennaro often quarrels with Elena's daughters, she remains tolerant until she catches them playing doctor. In a phone call with Lila, Elena learns that her sister Elisa is dating Marcello Solara. Baffled, she travels to Naples to discuss the matter with her in person.

Dinger blackmails Junior. A police raid puts Marlene and her clinic in jeopardy. Zeke leverages an unlikely ally to put integration to a vote. Lucy's new shot at stardom could cost her everything.

Sam fights zombies and Frankie dresses up.

While Drs. Lim, Murphy and Wolke help a teenage "biohacker" whose self- experiments begin to compromise his health, Drs. Morgan, Park, Jordan and Glassman treat a young woman who wants a controversial surgery to treat her depression and chronic pain. Additionally, Dr. Reznick looks to take the next step in her relationship with Dr. Park.

At a secondary school in Harry's neighborhood, a burned-out teacher attempts to interest his class in Wuthering Heights. But class troublemaker, smart, mouthy Fergus shows what a hopeless task the teacher has.

Jimmy welcomes TV hosts Joe Scarborough & Mika Brzezinkski, actress Alison Brie, authors Kevin & Danielle Jonas, and a musical performance by Coi Leray.

Stephen welcomes sports analyst Shaquille O'Neal and actress Mayim Bialik.

Once again it's time for Discovery's Mark Week courtesy of Robot Chicken; Nobody realizes Daria is being sarcastic until it's too late; The Wayne family's Murder Alley gets commercialized and Bruce is pissed.

When Augie has a bad dream, Doggie Daddy and others entertain her with random stories.

Hunger hits the crew as a new day dawns. Chelsea struggles with what comes next, Tom proposes an ambitious plan, and a rogue drone changes the game.

Harry and Fergus have become local celebrities, and the murdered man's widow approaches asking for help. She doesn't believe his death was a suicide, and she's accumulated evidence-her late husband's body cam, and newspaper clippings announcing cryptic games. But Harry isn't interested in any more cases. Kayleigh, she tells Fergus, was a one-off. She's his tutor, not one half of a dynamic duo.

James welcomes actress Lisa Kudrow, actress Mira Sorvino, and a musical performance by Jimmie Allen.

The Dedham ordeal has softened his hostility but when Bannister indulges Thomasine by letting her go for a swim, she is snatched and dragged away to a ransacked church.