Passport to Suez

Passport to Suez 1943 is the tenth film in the Lone Wolf series, the last to star Warren William as the character. The Lone Wolf battles Nazi spies in Egypt.

When King returns to her hotel room, Karl is waiting for her. She is one of his agents, currently extracting information from Donald for their real goal the plans for the minefields and defences of the Suez Canal.Meanwhile, the Lone Wolf is approached by Whistler Sig Arno, yet another unscrupulous man with information to sell. Whistler sells him lace that King had sent to a laundry the hidden message indicates that whatever the Nazis plan to do is to be finished by midnight. ........

Source: Wikipedia