The creative team behind "Sherlock" are reportedly reuniting to make a new TV version of "Dracula".
Steven Moffat and Mark Gatiss are poised to create a series of BBC specials based on the 1897 novel about a blood-thirsty count, with the broadcaster hoping the project will air in 2019.
A source said: "It's early days and the BBC has not seen a script yet but they are close to signing a deal for a series of 90-minute films of Dracula.
"It's not yet been decided if it will be historical or modern day or if there will be a US co-producer but the BBC are keen on this and it will happen. What needs to be decided is how many episodes - whether there are three or five or six or whatever but they will definitely be 90-minute films.
"Production is at least a year away so it will probably be on screen in 2019 at the earliest."
Mark actually played the part of Dracula in a recent audio drama, but it's thought it's unlikely he will be cast in the titular role in the BBC production.
The source told the RadioTimes.com: "Casting is a long way off but the feeling is he probably won't - but you never know."
"Dracula" will represent the first collaboration between Steven and Mark since "Sherlock" last aired in January.
But Steven has not made any secret about his admiration for Mark, previously saying he loves working with him.
Meanwhile, a production source also addressed the future of "Sherlock", which stars Benedict Cumberbatch and Martin Freeman.
The insider said: ""Sherlock" will return when "Sherlock" returns."