"You're not the Doctor I knew."

"Perhaps you never knew the Doctor."

Hong Kong 1997: the handover to Chinese rule is imminent, and investigative journalist Sarah Jane Smith is on the trail of corruption in the Far East.

Street gangsters lurk round every corner. And when one decides to confide in Sarah, she is thrown headlong into danger. What are UNIT doing in Hong Kong, and why are they following missing backpackers? What is causing a spate of strange and unnatural deaths? And how is Sarah's old and trusted friend the Doctor involved? More importantly, whose side is he on?

The truth can now be told, and the outcome of Sarah's investigations revealed. But will her world ever be the same again?