Episode list

As the government prepares to sell off the telecommunications network to the highest bidder, including Starling Industries, Sarah investigates a spate of unexplained deaths in phone boxes across the capital. Elsewhere, Harry is vetting the bidding companies on behalf of UNIT, delighted when the assignment converges with his old friend - and her robot dog! Sarah and Harry realise they are investigating the same thing - why is government minister Sir Gordon Carmichael covering up the 'phone box murders', and what alien power is Violet Starling preparing to unleash?

Self-made millionaire Eric Chen inexplicably went from working in a sawmill to designing a revolutionary computer chip that has made billions. He had no training or education in electronics. How did he do it? His new PA - Sarah Jane Smith - is determined to find the answer.

Busier than ever with so many cases, Sarah has little time to write up her cases for publications. But taking shortcuts risks making mistakes, as a journalist and as an investigator. When an old adversary reappears, the pressure reaches boiling point. But can Sarah rely on her closest friends in this crisis?