In the last episode of this series, the Silent Witness team are in Zambia, helping an old friend of Nikki's (Emilia Fox). Emilia Fox, William Gaminara and Tom Ward star as the team of forensic pathologists uncovering the truth behind suspicious deaths, in one of the most successful and long-running crime dramas. When Rachel Harrington's bones are found in Zambia, her father's employer, and mine-owner, Peter asks his childhood friend Nikki to fly out. Rachel had been accusing the Government of a health cover-up. The local police claim that Rachel was killed by wild animals. Her father Stephen is not convinced. Christopher and Harriet, who run the mission where Rachel worked, weren't keen on Rachel or her influence on their daughter Bethany. Leo and Nikki examine the bones and determine that the body received multiple stab wounds - but when they do a full post mortem, they realise that the bones belong to a woman in her mid forties, not Rachel. When Rachel's friend, Emil, is hit in a traffic accident on the way to meeting Rachel, the team begins to wonder if she is still alive...