Francis Iles (Anthony Berkeley Cox) in "The Guardian" (15 October 1970) said, "Of all the idiotic conventions attaching to the thriller the silliest is the idea that a car whizzing round a corner at high speed can be aimed at an intended victim who has, quite unseen, stepped off the pavement into the roadway at exactly the right moment. Agatha Christie uses this twice in "Passenger to Frankfurt". For the rest the book is largely a discursus on a favourite old theme of Mrs Christie's, the present state of the world and its future outlook, on both of which she takes a somewhat dim view. In other words, for her eightieth book a rather more serious work than usual from this author."