Six years ago, a group of travellers set off on an African safari. Only one woman returned. The only woman to have seen the killer's face.In Boston, Detective Jane Rizzoli and Forensic Pathologist Maura Isles are investigating a bizarre murder. When another victim is discovered, it is clear that this murderer has been at work for years - and not just locally.Has the 'safari killer' resurfaced in Boston? There is one survivor who can help Rizzoli. But only if she can convince her to face death once again ...