Answer: ericambler

AnswerCrossword Clue
ERICAMBLERHe wrote the novel on which "Topkapi" was based
ERICAMBLER"Journey Into Fear" author
ERICAMBLER"The Mask of Dimitrios" author
ERICAMBLEREnglish author of spy stories.
ERICAMBLER"Epitaph for a Spy" author