The announcement Jonathan Groff's casting in upcoming episodes of Doctor Who was already plenty to get people's attention ahead of the series' return this fall, but the latest rumor might encourage many lapsed fans to check out the new run with their Disney+ subscription. There are a number of fans who think that Groff is coming into the Whoniverse to play the new Captain Jack, and returning showrunner Russell T. Davies isn't doing a lot to squash the speculation.
What seemingly started as an acknowledgment that Jonathan Groff had the same basic hair and eyes as John Barrowman's Captain Jack Harkness has now spun into a theory that Groff is coming to Doctor Who to play a younger version of the time agent once known as "The Face Of Boe." At first, it just seemed like a fan wish that wasn't grounded in any actual information. Then, someone posted that Russell T. Davies liked their comment asking if Groff was the new Captain Jack, and suddenly, it's a thing (via Twitter):
