Sam and Dean will have a special team up next year. They will team up with Scooby and the gang to solve a mystery. Season 13 will have this special crossover with Scooby,Shaggy, Daphne, Freddy, and Velma.
Here is the Tweet about this crossover.
— Arrow #DH #AKF 55d (@375cArrow) May 18, 2017
This is really KOOL. Great job CW in making things fresh on a series that has ran for 13 Seasons. I cannot wait to see the brothers in the Scooby universe.
Stay Geeky My Friends!