Subscribers to the monthly range whose subscription included this audio received The Four Doctors free. Additionally, a reading of the short story The Little Drummer Boyby Beth Chalmers was released as a free download to subscribers with this release.
Purchases directly from Big Finish also gained access to downloadable extras, including the script of the stories, extended interviews with the cast and crew, and the full recording of The Devil's Whisper: the central play within Special Features.
All stories in the main monthly range are included in this navigation box including the "subscriber exclusive" stories which are part of Big Finish Productions' subscription service for this range. All other stories are represented in other navigation boxes.