The Virgin books were a line of original novels published by tardis:Virgin Books featuring the Doctor and his companions during the 90s. Virgin (which also owned the licence to publish the Target Books line of episode novelisations), published the New Adventures (more than 50 novels featuring the Seventh Doctor, plus one with the Eighth), the Missing Adventures (dozens of original stories featuring the first six Doctors), Decalog (a series of short story collections) and the Bernice Summerfield New Adventures (a continuation of the series featuring companion Benny Summerfield after Virgin lost the licence to the Doctor to BBC Books). Many writers who later worked on the Modern Era wrote for the Virgin books series, including Russell T Davies, Steven Moffat (a Decalog short story), and Mark Gatiss. The TV episodes "Human Nature" and "The Family of Blood" adapted Paul Cornell's original novel "Human Nature" (novel). To find out more, see tardis:Virgin Books.