|Main enemy:||The Master (unseen)|
|Main setting:||The Doctor's mind|
|Publisher:||Big Finish Productions|
|Part of:||Circular Time|
|Release date:||January 2007|
|Format:||1 X 25 min.|
|Big Finish Doctor Who audio stories|
Winter was a 2007 Big Finish Productions full-cast audio short story, featuring the Fifth Doctor and Nyssa. It was set within the last few moments of the Fifth Doctor's life, as he was battling the Master for control of his regeneration — meaning that most, but not all, of the narrative takes place in the Doctor's mind.
It was further notable for being the only Big Finish audio, as of 2014, to use the character of Kamelion in any significant way.
Many years after their travels together have ended, the two friends meet again in the strangest of circumstances.
to be added
- There are mentions of the Fifth Doctor's former companions Adric, Tegan Jovanka and Turlough as well as his current companion Peri Brown.
- Nyssa is married to a man named Lasarti. They have an infant daughter, Neeka.
- The Doctor tells Nyssa that she would like Peri but then reconsiders, saying "or possibly not."
- Though Paul Cornell and Mike Maddox share the writing credit on the Circular Time anthology, this story was written by Cornell alone. Cornell has referred to the story as "a weird fanservice thing."
- In spite of the fact that he remains unseen throughout, this is the first Fifth Doctor audio drama to feature the Master as a villain. He would later appear in AUDIO: Smoke and Mirrors.
- As it takes place during his regeneration into his sixth incarnation as depicted in TV: The Caves of Androzani, this is the final audio drama, chronologically speaking, to feature the Fifth Doctor.
- Nyssa and Lasarti help the Doctor into a recreation of the Zero Room in his mindscape. (TV: Castrovalva)
- The Master uses Kamelion's connection to the Doctor's TARDIS to try to prevent the Fifth Doctor's regeneration into the Sixth Doctor. (TV: The Caves of Androzani)
- The Doctor and Nyssa encounter the Watcher in his mindscape. (TV: Logopolis)
- The Doctor says that his next incarnation will be very colourful, a possible reference to the Sixth Doctor's patchwork coat. (TV: The Twin Dilemma, et. al)
- Later in her personal timeline, Nyssa would encounter the Fourth Doctor in 3488 (PROSE: Asylum) and would subsequently re-join the Fifth Doctor as one of his companions (AUDIO: Cobwebs). From the Doctor's perspective, both of these events had already happened.
- Nyssa and Lasarti would later have a son, whom she named after Adric. (AUDIO: Heroes of Sontar, Prisoners of Fate)
- The Doctor tells Nyssa that both Tegan and Turlough have left the TARDIS. (TV: Resurrection of the Daleks, Planet of Fire)