In March 2011, a major police investigation was opened in the search for missing Swindon local, Sian O'Callaghan. When taxi driver Christopher Halliwell was arrested, Detective Superintendent Stephen Fulcher didn't expect what happened next.

After the body of another missing girl, Becky Godden-Edwards, was uncovered, the police had two murders on their hands and one suspect, but how many more unsolved murders could Christopher Halliwell be responsible for? The hidden cache of around sixty pieces of women's clothing and accessories that he led police to suggests that the number could be much higher than the two murders he has been convicted of.

In The New Millennium Serial Killer, former police intelligence officer Chris Clark and true crime podcast host Bethan Trueman use their in-depth research to present a comprehensive study into convicted killer Christopher Halliwell. With a foreword by former Detective Superintendent Stephen Fulcher, this book presents a fascinating account of this cruel killer and tells the heartbreaking stories of over twenty women whose cases remain unsolved today, seeking to find justice for their loved ones who are still waiting for answers. Do they remain with Christopher Halliwell and the collection of women's items?