BBC AMERICA celebrates the Fifth Doctor, Peter Davison, in a new special of Doctor Who: The Doctors Revisited. Davison became the Doctor in 1981 and played the character for three years. Twenty-nine at the time of his first appearance in the series, Davison was the youngest actor in the part until 2010 when Matt Smith became the eleventh incarnation of the Doctor. The special begins with Peter Davison, lead writer and executive producer Steven Moffat, Season Six guest star Hugh Bonneville (Downton Abbey), Fifth Doctorcompanions Sarah Sutton and Mark Strickson, among others, examining one of the most dramatic departures from the series to date and discussing the return of the two popular foes, the emotionless Cybermen and the ever-deceitful Master. Following the discussions is an airing of the Fifth Doctor story Earthshock, in which a conference to unite military powers against the Cybermen is about to take place, but the Cybermen plan to interrupt it and destroy the Earth. The Doctor must race against time to stop his enemies at any cost...