Since was first pitched by Ackles, who is an executive producer on the series, for not adhering to canon. While explores John and Mary's young adult years in much more depth, their lives were also touched upon in , which tells a very different story than the prequel. begins in 1972, which sees Mary's family torn apart as she tries to track down her missing father.
She does this alongside John, who becomes a hunter with her. However, in , John doesn't become a hunter until after Mary's death in 1983. With these changes already in place, there's a chance that Welling's appearance as Samuel on will further twist canon, since the original show already covered some of his whereabouts in the '70s. However, there is still some space where can form its own story.
Despite fears that will deviate significantly from its source series, however, creator Robbie Thompson has reassured fans that
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