Doctor Who The Wedding of Sarah Jane Smith (2006)

As Luke, Clyde and Rani regain consciousness, the Doctor introduces himself, swiftly revealing that they and K9 are the only people in the hotel, which now exists in a white void trapped at 15:23:23; The Trickster has literally trapped them in a second, cutting them off from the rest of the world, and more importantly, cutting them off from the TARDIS, which cannot materialise properly. Using K9's sensors and the sonic screwdriver, the Doctor is able to determine that Sarah Jane is trapped in another second, deducing that The Trickster has separated the group to prevent them helping Sarah Jane.