As Walter notices unattractive changes in himself from his brain restoration (leading him to make a startling request of Nina Sharp), Olivia notices changes in Peter - now cold and calculating - which leads her to learn of his implant as the team labors toward obtaining the next vital elements needed to defeat the Observers.
Did You Know?
Walter's problem in remembering Astrid's name persists; here he calls her "Agnes". See more
Dr. Walter Bishop
Fire up the laser, Agnus. Let's get that hand out of amber.
References Marathon Man
Main Title Theme
Written and Performed by J.J. Abrams See more