Adam reveals to Sam and Dean that he is John's son but he takes a sharp left turn when he transforms into something horrible, all new in 'Supernatural'.
"Supernatural" will take a two-week break and a promo for the April 23 episode is available. Called "Jump the Shark", this would be the episode where a third Winchester brother is introduced. Played by Jake Abel, the character is named Adam Milligan and he is conceived while John Winchester set out on his hunting adventure and met Kate Mullany.
In the episode, Adam's life is changed after he transitions to be a monster. Creator Eric Kripke explained the addition of the third brother to TV Guide, "When we were breaking the story about the third Winchester brother, we knew the fans would scream that we had jumped the shark. Of course, adding a new sibling or relative to an established series is a classic and cherished shark jump, Cousin Oliver being the patron saint of the practice (Brady Bunch)."
He continued, "For fans who are worried that we are truly jumping the shark... watch the episode, decide for yourself. Personally, I don't think we're gassing up the motorcycle quite yet, but you tell me."