BBC One‘s long-standing British sci-fi mystery drama Doctor Who is running a Christmas Special tonight.
The Return of Doctor Mysterio is a precursor for series 10, airing in April, while #doctorwho spinoff prequel series Class just ran its first season.
827 Doctor Who installments have been televised since 1963.
In April 2015, Steven Moffat confirmed that Doctor Who would run for at least another five years, extending the show until 2020.
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