Brother's Keeper is the sixteenth episode of television series Prison Break, written by Zack Estrin and directed by Greg Yaitanes. This episode is a flashback episode featuring the events which happened three years prior to the incarceration of the protagonist, Michael Scofield. It covers the actions of the characters Lincoln, Sucre, T-Bag and C-Note, which ultimately led to their incarceration at Fox River State Penitentiary. The reason behind Dr. Sara Tancredi's choice in accepting a job at Fox River and the basis of Michael's ingenious break-out plan are also revealed.