Supernatural may not have gone on hiatus over Christmas, but I did, so I've got a bit of catching up to do.
Sam is trawling the Internet, looking for "weird" for the Winchesters to investigate when he comes across phone footage that appears to show that Charlie (fan-favourite Felicia Day) is back from Oz and beating up a District Attorney on his front lawn!
Dean suspects there maybe some demon action involved, but when the brothers track down Charlie they are genuinely surprised by her story.
There's No Place Like Home is a simple, but elegant, extrapolation of established Supernatural mythology that not only serves Charlie's character really well, but draws dramatic parallels with Dean's own ongoing battle with his inner demons (ie. the Mark of Cain).
The central plot twist fits perfectly with the magical imagery of Oz, and Robbie Thompson's uncomplicated script manages to put a suitably dark, Supernatural spin on the Wizard of Oz himself, keeping him within the verisimilitude of the show's universe.
Totally embedded in the show's continuity, There's No Place Like Home is one of the strongest episodes so far of this generally weak season and hopefully marks a turnaround as we head towards the back half of the Season Ten.