Series:Star Trek: The Next GenerationEpisode: Season 7, Episode 10Title:"Parallels"Previous: InheritanceNext: The PegasusRecapper: IlGreven Worf returns home from a Klingon bat'leth tournament that he won to a surprise birthday party thrown by Riker. As he celebrates being "old enough", he notices several subtle changes in his own reality: The flavor of the cake changes, Captain Picard is at the party when he said he wouldn't be available. As the Enterprise works on the Argus Array, a space telescope that is having problems, Worf has more dizzy spells, with more slight perception problems: officers switching positions, appearing and disappearing. More troubling, Doctor Crusher remembers him complaining about a concussion he suffered when he lost the bat'leth tournament. He returns to his r