Harper and Lipp then hire small-time hustler Arthur Simon Simpson (Peter Ustinov) to drive a car into Turkey to transport hidden explosives and firearms for use in the burglary. Simpson, knowing nothing of Harper's and Lipp's plans, is arrested at the border when Turkish Customs find the firearms. Because Simpson has no information for Turkish police, they conclude that the weapons are to be used in an assassination. Turkish Major Tufan decides to use Simpson to spy on Harper and Lipp for the police. Page, picking up the car in Istanbul, is told by a police ruse that only the "importer" Simpson is permitted to drive it in Turkey. While traveling with the gang, Simpson leaves cryptic notes for his police handlers, but most of his intelligence is worthless since Simpson is still ignorant of the plan.