The Turkish Secret Police suspect the "tourists" of plotting assassination and use Simpson to spy on Harper, Lipp and everyone else they meet in Istanbul.
The Turkish Secret Police suspect the "tourists" of plotting assassination and use Simpson to spy on Harper. The Turkish Secret Police suspect the "tourists" of plotting assassination and use Simpson to spy on Lipp. The Turkish Secret Police suspect the "tourists" of plotting assassination and use Simpson to spy on everyone else. They meet everyone in Istanbul.