Tom Baker's acclaimed first season as the Fourth Doctor, originally aired in 1975/76. With his best friend Sarah Jane Smith and new companion Harry, the Doctor pits his wits against a giant robot, the insect Wirrn, Cybermen, Sontarans and Daleks. - Twenty episodes, specially restored for Blu-ray and packed with new and old special features. Build your own archive of classic Doctor Who seasons with this six-disc pack.