Sam and Dean are contacted by one Adam Milligan who claims to be John Winchester's son. The boys immediately suspect a demon trap and go to investigate. Adam turns out to legitimately be John's son and Dean is furious that John kept Adam's existence from them as well as sheltered Adam from the hunting life. Meanwhile other supernatural forces are at work, which lead to a tragic twist that neither Sam, Dean, or their new sibling could have guessed. Written by
Did You Know?
The expression "jump the shark" is a term commonly used to describe the point in which a TV show has clearly passed its peak, often by adding characters or having bizarre plot points. The term originated from a Happy Days
(1974) episode in which Arthur "The Fonz" Fonzarelli performs a stunt in which he literally jumps over a shark while water-skiing. When Sam and Dean enter the diner, a poster for the "Fonzarelli Water-Skiing Championship" can be seen on the wall. See more
When Dean goes into the tomb it is shown to be night. But later through a window behind him you see that it's daytime outside. See more
References Law & Order