'Supernatural' Marathon on TNT

From the Press Release:
TNT will air a 20-hour marathon of favorite "Supernatural" episodes to get fans ready for the latest season of the hit series. The haunting drama will take over TNT’s lineup Thursday, September 23, at midnight (ET/PT) through Friday, September 24, at 8 p.m. (ET/PT) to build excitement for the series’ sixth season premiere on The CW (Friday, September 24, at 9 p.m.). That gives fans one hour between the end of the marathon and the start of Season Six to freshen up and maybe grab a bite to eat!
TNT’s marathon will kick off with the fourth season finale, “Lucifer Rising,” followed by the fifth-season premiere, “Sympathy for the Devil.” Along with a few random episodes from Seasons 2-4, the schedule includes 10 additional episodes from the fifth season, including the dramatic season finale at 7 p.m. (ET/PT). 

check out list of episodes here...