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David Tennant has teased further details on his surprise Doctor Who return<\/a>, which will be part of the show\u2019s 60th anniversary celebration next year.<\/p>\n We already know that the actor, who played the Tenth Doctor, will be reuniting with both screenwriter Russell T Davies and co-star Catherine Tate (as companion Donna Noble) for the special episode, but that might not be all.<\/p>\n Speaking at Fan Expo Boston over the weekend, Tennant reportedly\u00a0stated (via Nerds & Beyond<\/a>) that set photos captured so far \u201caren\u2019t even close to the whole story\u201d of his involvement in the episode.<\/p>\n He confirmed the existence of a closed set on which he and Tate filmed with \u201cmany other people\u201d, although did not specify whether these were former screen partners or new faces.<\/p> Nevertheless, these comments have sent fans into a frenzy of speculation, with many hoping for Marvel-style cameos from key players across the show\u2019s history \u2013 in both the modern and classic iterations.<\/p>\n Tennant also discussed how he has kept up to date on all things Who since his departure from the show, describing each new episode as a \u201cfamily event\u201d in his household, as well as how he felt upon bidding farewell to the TARDIS (the first time).<\/p>\n David teases that the public set photos of his #DoctorWho<\/a> return \u201caren\u2019t even close to the whole story.\u201d He and Catherine Tate filmed with \u201cmany other people\u201d on a closed set, so\u2026stay tuned!