The story was adapted for an episode of "Sherlock Holmes", the Granada Television series starring Jeremy Brett. The episode deviated from the original by including Watson in the adventure; the story nods to the framing device of the original by having Holmes, not looking forward to the trip, remark that he intends to organise some of his old cases before he met Watson in order to keep himself occupied. In addition, the story features an actual oak tree, which Holmes describes as "a patriarch among oaks, one of the most magnificent trees that I have ever seen." In the Granada film version, however, Holmes utilizes a weathervane in the shape of an oak perched on top of the Musgrave mansion to solve the mysterious ritual. At the very end of the teleplay, Rachel's body is shown to have been found after having floated up from the mere. Further, the 12th line of the ritual is adapted to suit the scenery and the 5th and 6th lines are omitted. It was filmed in the 400-year-old Baddesley Clinton Manor House near Birmingham, UK. This house was the Musgrave home in the TV episode.