A boy stuck in quicksand is brought to the ER.

Briggs (Nick Offerman) goes undercover in the children's psych ward; Blake's ex (Sarah Silverman) resurfaces; and Chief and Glenn share a moment.

Blake is evicted from his apartment for being a clown; Dr. Brian returns to the hospital after a stint working for the drama "Black Hospital"; and Cat is overexposed.

The doctors feel crowded from sharing an apartment and decide someone should move out. Elsewhere, Sy deals with his own domestic issues.

A pediatric plastic surgeon joins the staffers; Max Von Sydow has a mix-up in the maternity ward; and Glen and Owen try to hunt down a snack.

Glenn returns from Vietnam; Lola has new career aspirations.

Lola and Brian try to locate Cat's father; the doctors wait for a prisoner's execution and plan to use his heart in a transplant procedure.

The doctors go back in time.

Owen's secret wife (Alicia Silverstone) and baby visit the hospital for treatment; Val plays a high-stakes game of chess.

The staff work the night shift under the guidance of Velam Geza.

A day in the life of Chet (Brian Huskey), the creepy paramedic.

A long-delayed bar mitzvah for Glenn is planned; Owen wants his foreskin back.

Updates on the cast are featured on "Newsreaders" in the Season 3 finale.