The episode's end dovetails directly into the cold open of the "Doctor Who" episode, "Utopia". Jack sees the Doctor's hand's jar bubbling and hears the TARDIS' arrival on the surface and dashes upstairs; the TARDIS' materialisation and Jack reaching it are seen at the start of "Utopia." The hand jar is missing (while the similar other jar remains) an instant later when Gwen tells the others that Jack is gone. The closing aerial shot of Roald Dahl Plass is set after "Utopia"'s cold open, as the TARDIS has left the water tower. Jack returns the hand jar to the Doctor in "Utopia".