'The Grey Man of the Mountain' (4 Parts) by Lizbeth Myles

Something haunts the peak of Ben MacDui.

Something with heavy footsteps, striking terror in the hearts of those who sense it. With climbers going missing, retired Brigadier Lethbridge-Stewart visits Scotland to investigate.

But when some old friends join his ascent, he worries that they will make things even more dangerous. As the snows blow in, and mists surround them, the Doctor, Ace and the Brigadier will face the Grey Man of the Mountain...

Sylvester McCoy (The Doctor), Sophie Aldred (Ace), Jon Culshaw (Brigadier Lethbridge-Stewart), Lucy Goldie (Kirsty), Youssef Kerkour (Thaddeus Kanner / Tom / Grey Man), Vivien Reid (Niamh Godec / Janet MacKenzie), Guy Adams (Andy / Grey Man)

Directed by Samuel Clemens

Release Date:
December 2020

Notes:
*Featuring the the Seventh Doctor, Ace and Brigadier Lethbridge-Stewart

*A Big Finish Audio Production

*Time-placing: after'Battlefield'; Ace still seems quite young, excited for a street party, so I'm placing this prior to 'The Harvest'