Reply To: Once upon a Time S4 Episode 5 – Time and Relative ONCE/WHO crossover idea Home › Forums › Once Upon a Time › General discussion and theories › Once upon a Time S4 Episode 5 – Time and Relative ONCE/WHO crossover idea › Reply To: Once upon a Time S4 Episode 5 – Time and Relative ONCE/WHO crossover idea May 23, 2014 at 6:56 pm #271120 PriceofMagicParticipant A Doctor Who/Once crossover episode would be awesome. [adrotate group="5"] All magic comes with a price! Keeper of Felix