Today's episode is “Ouroboros” and we'll be discussing some episodes in science fiction with time loops. Think Groundhog DayStar TrekTNG: Cause and Effect S5 E18Voyager: Coda S3 E15Discovery: Magic to make the sanest man go mad S1 E7X-FilesMonday S6 E14Doctor WhoHeaven Sent S9 E11StargateWindow of Opportunity S4 E6MarvelWhat If... Doctor Strange Lost His Heart Instead of His Hands? S1 E4FringeWhite Tulip S2 E18