When Nadine Middleton travels to Egypt, she does not expect to meet Lancaster Smith, the man who discredited her father. As she embarks on a quest to clear Raleigh Middleton's name, she wonders who is friend and who is foe amongst the other passengers on the Nile steamer. With one apparent death and another person going missing, along with some mind-blowing and life-threatening riddles to solve, Nadine finds herself relying on Lancaster more and more - but can she trust him?