AMC will marathon all 19 episodes of The Walking Dead's first two seasons the weekend of July 8, leading up to a special edition of Talking Dead and a never-before-broadcast black-and-white conversion of the series pilot.
The Dead-athon kicks off Saturday, July 8 at 11:30am EST, running to 1 am that night. The action picks back up Sunday at 11:30 am, leading into the 9 o'clock…