TV fans at MCM Comic Con at the Excel at the weekend heard an exclusive snippet from the makers of Sherlock – the screening date of the special Christmas episode.

To cheers, it was announced that Sherlock : The Abominable Bride, a one-off special set in London in 1895, will be screen on BBC One on New Year’s Day.

A new set of pictures was also released as well as the news that at a simultaneous screening will take place on PBS in America – and at more than 100 cinemas across the UK.

A trailer shows Benedict Cumberbatch and Martin Freeman as Holmes and Watson in foggy Victorian London as they pursue an “impossible case”, taking the famous detective back to his original Arthur Conan Doyle timeframe.

Fans were told the news during an hour-long panel with Steven Moffat, Mark Gatiss, Sue Vertue and Amanda Abbington

The cast for the 90-minute special includes Rupert Graves, Una Stubbs, Louise Brealey and Amanda Abbington. Cinema screenings will be showing some behind he scenes extras including writer Steven Moffat giving a guided tour of 221B Baker Street

Moffat said: “Sherlock on the big screen. For us, it’s a giant leap backwards - into Victorian London. The mean streets of 1895 have never looked so good.”

Video Loading

It will be shown in all branches of Picturehouse cinemas – which has screens at Hackney, Stratford and Greenwich – and selected Odeon and Vue cinemas. Tickets go on sale on November 2. Details of cinema screenings in other countries are still to be announced.

The show’s fourth series will begin filming next spring.

Steven Moffat talks about what the Doctor and Sherlock have in common, plus answers the age-old question of whether they'll ever be a Doctor Who and Sherlock cross over