Starring Alan Davies as the eponymous mystery-solver and with Sheridan Smith returning as his sidekick Joey Ross, the 90-minute special - entitled The Clue of the Savant's Thumb - has been written by David Renwick, who created the show and who wrote all its previous episodes. It is to be made by BBC In-House Comedy for BBC One, with filming starting later this month.
In the story, Creek and Ross are drawn into a complex case involving a secret society, seemingly supernatural events at a girls' boarding school, and the miraculous disappearance of a body in front of three witnesses.
The new story has more than the usual amount of twists and surprises, and I'm very much looking forward to sleuthing again. I can't wait to join Sheridan Smith on set again. We're very lucky to have her. It's nearly 17 years since I first auditioned for the part. The duffle coat is always on stand-by, even if the periods of duffle-hibernation are quite long these days.
Pete Thornton, the creative head of BBC In-House Comedy, added:
A new Creek script from David is always a joy, and this one is especially brilliant. With the dream team of Alan Davies and Sheridan Smith back on board, we're looking forward to delivering a really special Easter treat for BBC One audiences next year.
No director has been announced yet, but it will be produced by Rosemary McGowan, with Pete Thornton as the executive producer.
Jonathan Creek first aired in 1997 and there have been four series and two specials so far. In 1998, it won the BAFTA for Best Drama Series. Julia Sawalha, who played the Doctor's assistant and love interest Emma in Steven Moffat's Doctor Who spoof The Curse of Fatal Death for Comic Relief in 1999, was Creek's assistant Carla Borrego between 2001 and 2004, while guest stars have included Peter Davison, Colin Baker, Paul McGann, Maureen O'Brien, Mary Tamm, and Geoffrey Beevers.