In “Plush,” Supernatural gives us a fun yet heartbreaking episode with a clown, a giant killer rabbit, a court jester mascot, and a threatening deer. It’s fun not only because it plays on Sam’s clown phobia, but because Briana Buckmaster returns as our favorite Minnesotan, Sheriff Donna Hanscum. We first met Donna in Season 9 when Sam (Jared Padalecki) and Dean (Jensen Ackles) were investigating a pishtaco. Then she returned for the Season 10 episode “Hibbing 911.” After the serious, plot-advancing story in “Our Little World,” did Supernatural do well to give us a costume drama set in the land of 10,000 lakes? You betcha!