The Walking Dead returns with all-new episodes on Sun., Feb. 12 at 9/8c. Which may leave the uninitiated panicking about how they can possibly catch up in time. Worry not! On Sat., Feb. 11 at 8/7c, AMC begins a two-day The Walking Dead marathon on-air covering the full series to date. First comes all six episodes of Season 1 back-to-back on Saturday starting at 8/7c. Then on Sunday, the marathon continues with Season 2 episodes starting at 1:30PM/12:30c, leading right into the Midseason Premiere, “Nebraska” at 9/8c.