to be added
- At least one of the Hindu gods (Kali) was inspired by a transcendental being who is worshipped on at least one planet other than Earth.
- Mirrors are used in the transmat that takes individuals to and from the world Kali's cult is on.
- The author intended the story to be set in-between Dimensions in Time and Search Out Space, two stories that are considered non-valid by this wiki.
- This story establishes that the K9 featured in the final moments of Dimensions in Time was a model built by the Seventh Doctor rather than one pulled through time by the Rani. The suggestion is that the K9 seen in Search Out Space was also this variation.