Asylum (novel)

 was the forty-first novel in the BBC Past Doctor Adventures series. It was written by Peter Darvill-Evans, released 7 May 2001 and featured the Fourth Doctor and Nyssa.

Publisher's summary
"My view," said the Doctor, "is that you can run — in fact it's often by far the best option — but you can't hide. I'll see myself out."

''Nyssa felt a pang of disappointment. He had gone. She would probably never see him again.''

The town of Oxford in AD 1278 seems a haven of tranquillity. Under the summer sun, merchants, students and clerics go about their daily, unhurried tasks. Alfric, the proctor of the Franciscan friary, has only two minor problems: one of the friars has gone missing, and there's a travelling showman, calling himself the Doctor, with a pretty young noblewoman by his side, attracting crowds in the narrow streets.

When the missing friar is found dead, the Doctor is convinced he has been murdered. There is a ruthless killer at large, and Alfric reluctantly teams up with the Doctor to track him down.

Their investigation leads towards the most celebrated of the Franciscan brotherhood: Roger Bacon, famed throughout Christendom as a scholar — and, in the far future, the subject of a revolutionary thesis by technographer Nyssa of Traken.

Plot
to be added

Characters

 * Fourth Doctor
 * Nyssa
 * Brother Alfric
 * Guy de Marenne
 * Richard of Hockley
 * Roger Bacon
 * Brother Oswald
 * Lady Matilda
 * Brother Thomas
 * Brother Hubert
 * Chancellor Philip of Seaby
 * Brother Godwin

Worldbuilding

 * The Doctor passes himself as a monk of the house of Prydon and swears on the sash of Rassilon.

Continuity

 * Later in the Doctor's personal timeline, towards the end of his fourth incarnation, he would meet Nyssa for the first time from her perspective on Traken in 1981. (TV: The Keeper of Traken) In Nyssa's personal timeline, the events of this story take place many years after she parted company with the Fifth Doctor on Terminus. (TV: Terminus)
 * Nyssa had previously been reunited with the Doctor, then in his fifth incarnation, on Gallifrey after being transported to an alternative Death Zone by Borusa. (AUDIO: The Five Companions) She would subsequently meet the Fifth Doctor in his mindscape during his regeneration into his sixth incarnation. (AUDIO: Winter) Later still in her personal timeline but earlier in his, she would re-join him as one of his companions. (AUDIO: Cobwebs)
 * Nyssa recalls the Doctor's regeneration into his fifth incarnation, (TV: Logopolis) visiting England in September 1666 (TV: The Visitation) and June 1925 (TV: Black Orchid) and killing several Cybermen in 2526. (TV: Earthshock)