Season 6 of Only Murders in the Building is becoming a real Doctor Who-dunit. Two former stars of the long-running (until recently) science fiction franchise are set to join the cast of suspects, witnesses, and red herrings of the Hulu crime comedy as it ventures across the Atlantic next season, as are seemingly half the actors in the British Isles.

It’s time to break the illusion: actors are not actually the characters they play. And yes, that means they might cross multiple major franchises. In the world of major pop culture movie franchises, there are very few that are bigger and more beloved than Star Wars and Harry Potter. Though one is a science fiction space opera and the other is a magical fantasy epic, there is a crossover in themes, thus drawing in a familiar demographic.