"The stakes couldn't be higher as MI5 officers Sam Tilson, Ebony Fadipe, and their team are plunged into a shadowy world where the past refuses to stay buried. As a new inquiry into the UK's involvement in extraordinary rendition flights from Guantanamo Bay is launched, the team is tasked with uncovering a conspiracy that has been carefully concealed for over two decades. With evidence buried in redacted files, dangerous cover-ups, and an international network of clandestine operations, the team must navigate a treacherous path where every step could lead to fatal consequences."