The Virgin Missing Adventures were a series of novels from Virgin Publishing based on the British science-fiction television series Doctor Who, which had been cancelled in 1989, featuring stories set between televised episodes of the programme. The novels were published from 1994 to 1997, and featured the First through Sixth Doctors. (The Seventh Doctor also appeared in one novel.) The Missing Adventures complemented the Virgin New Adventures range, which had proved successful. Source: Wikipedia (en)