Script editor Matt Fitton said: "The Seventh Doctor lends himself to those kinds of spooky, eerie stories – things like Ghost Light and Curse of Fenric – and the idea of having him meet Carnacki on a ghost-finding adventure has been brewing in my mind for a while now.

"We have three stories here all written by writers who have a penchant for the horror genre. It's been great to bring them together and have the two characters bounce off each other all the way throughout Carnacki's life and career, from the beginning to the end."

Writer Georgia Cook added: "It was really good fun developing Carnacki. We have a good sense of him as an adult, and we get bits of him as a child throughout the original stories, but we never really get to meet him specifically as a younger man.

"So it was interesting developing who he might have been into who he is now and the insecurities that he might have had starting out, meeting the impossible and the supernatural for the first time, and the things that he might still carry with him to this day."

Producer Emma Haigh said: "I loved [script editor] Matt Fitton’s idea to create a spooky set where the Seventh Doctor meets Carnacki. And being able to bring both Joe and Dan in so we can explore Carnacki’s life a little more has been really great.

"Alexandra, Georgia and Jonathan have created three wonderfully eerie stories, where Carnacki is tested to his limit. We had a lot of fun in the studio bringing these to life and I couldn’t be more pleased with the final productions."

Actor Dan Starkey added: "It was quite a long time ago, the best part of ten years, that I recorded narrations of the original stories by William Hope Hodgson, which comprise the collection Carnacki the Ghost-Finder. Those stories are great fun – it's almost like Sherlock Holmes with ghosts, he's very, very forensic about how he approaches ghost hunting.

"And with this, it's wonderful to play him in a drama where he's interacting with other characters, and actually meeting the Doctor, and the wider palette of the Doctor Who universe that he can explore as well. It's a very nice synergy, and the scripts are great."

Sylvester McCoy and Joe Jameson

Janet Amsden, Caitlin Joseph

1 - The Haunter of the Shore - Sylvester, Janet Amsden, Caitlin Joseph, Joe Jameson, Shogo Miyakita

2 - The House - Harry Hart, Georgia Cook, Sylvester McCoy, Ewan Thomson

3 - Institute of Forgotten Souls - Rebecca Crinnion, Sylvester, Alan Cox, Ewan Thomson