Written by Douglas Adams as his final contribution to Doctor Who, Shada was envisaged as a Time Lord story without a Gallifreyan setting. It sees the Doctor bringing Romana to present-day Earth to visit Professor Chronotis, an elderly Time Lord who absconded from Gallifrey and now lives a quiet academic life at St Cedd's College in Cambridge. Also seeking Chronotis is a scientist called Skagra who has a device, in the form of a floating sphere, with which he intends to steal the Professor's mind and thereby learn the location of a book entitled The Worshipful and Ancient Law of Gallifrey. Skagra eventually succeeds in obtaining the book, which has been borrowed from the Professor's study by a student named Chris Parsons. He then kidnaps Romana and hijacks the TARDIS.