When a body is found in the theater of Martha’s latest show, Castle and Beckett’s investigation leads them into the unexpectedly dangerous world of competitive a capella.

Dr. Manning and Dr. Halstead become skeptical of a patient’s injuries when the victim of a car accident is brought into the hospital. Ethan and April have a difficult time…

Nancy and Jonathan swap conspiracy theories with a new ally as Eleven searches for someone from her past. “Bob the Brain” tackles a difficult problem.