Diplomatic Courier

Directed by Henry Hathaway

Written by Casey Robinson (screenplay), Liam O'Brien (screenplay), Peter Cheyney (novel)

Cast: Tyrone Power as Mike Kells, Patricia Neal as Joan Ross, Stephen McNally as Col. Cagle, Karl Malden as Ernie Guelvada

Released 1952

Film adaptation of Sinister Errand but with both Kells and Guelvada becoming American and Kells working for the State Department.
Mike Kells, a courier for the Department of State, is coerced by the Military Police to get deeper into an assignment than he ever expected. Helping out along the way is Ernie Guelvada.
"A US State Department courier tangles with Soviet agents and seductive women in post WW2 Europe."