The Equation

Summary

Walter thinks the abduction of a young music prodigy is linked back to his old bunkmate at St. Claire's Hospital. When he kidnaps the child he sees a sequence of flashing lights. Olivia wants Walter to return to the mental institution much to Peter's outcry, but Walter's determination to help ends up having chilling ramifications.

Guest stars

• Chance Kelly as Mitchell Loeb
• Gillian Jacobs as Joanne Ostler
• Darby Lynn Totten as ND Agent #2
• William Sadler as Dr. Sumner
• Kate Hodge as Abby Stockton
• Kevin Carolan as Frank the Orderly
• Charlie Tahan as Ben Stockton
• Randall Duk Kim as Dashiell Kim
• Adam Grupper as Andrew Stockton
• Nance Williamson as Maureen Stockton