By Lynette Rice
Updated March 01, 2012 at 12:00 PM EST

Walking Dead fans were treated to one heckuva spoiler on the AMC website Thursday.

An ad touting the release of the season 2 DVD inadvertently revealed a major plot point in an upcoming episode, in addition to promising other features like an extended zombie gut scene and the making of the barn. The set of 13 episodes doesn’t ship until August, but you can order it now (and for only $99.99!)

The snafu prompted an AMC spokesperson to release this statement: “The post on the AMC store was completely unauthorized. The matter is currently under investigation.” By late Thursday, however, the spoiler still existed on the website. Yikes! (Update: It’s been removed, but you can still see it in our link below.)

If you don’t watch Dead and want to see what all the hubbub’s about, click here to check out the spoiler. But if you do tune in regularly, stay the heck away.

Episode 11 of Dead airs Sunday.

For more:

Walking Dead writer talks about episode ’18 Miles Out’

The Walking Dead recap