Prison Break S04E01 Episode Outline: Episode 4x01 "Scylla" ; original airdate: September 1, 2008 [vg_byrev] [vg_youtube JLFLyyhiehk#Prison Break - Preview 4##Michael has trailed Gretchen/Susan, Whistler and Mahone to L.A. The fourth season will see the return of Sara Tancredi.] [vg_youtube qDUSt94-XzY#Prison Break - Preview ...