"Teen Wolf" (Sun., 11 p.m. ET on MTV) picked up right where it left off in this second season premiere, airing on a special night after the "2011 MTV Movie Awards." When last season wrapped, Derek looked like he was about to bite Jackson, to fulfill the bully's wish of becoming a werewolf. And that's exactly what happened.

Only rather than start baying at the moon, Jackson started bleeding black goo out of his nose and ears. Black was also on the menu for Lydia, who was attacked by the Alpha last season and nearly killed. But did she turn into a werewolf? Her fate was unclear. And what did it meant that the water in her hospital shower turned black and appeared to be filled with hair?

Lydia spent the next couple of days naked, but was she also killing people? Stealing and eating livers from cadavers? Near-nakedness was a trend, with Scott and Allison getting hot and heavy, despite her promise to her dad to stay away from him forever in exchange for Scott's life.

But it looks like the truce may be short-lived. In the wake of Allison's aunt dying, her grandpa is in town, and he called an end to the code the hunters had been living by, emphasizing it by cutting an omega -- or lone wolf -- in half.

Follow all the supernatural drama as "Teen Wolf" settles into its regular time slot, Mondays at 10 p.m. ET on MTV.