Harry Palmer
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![On-set during filming of The IPCRESS File, Len Deighton teaches Michael Caine how to break an egg.](/Images/godic/202501/17/Len_Deighton_and_Michael_Caine_Ipcress_File0458.jpg")
Harry Palmer is the protagonist of a number of films based on the unnamed main character from the spy novels written by Len Deighton. Michael Caine played Harry Palmer in three films based on the four published novels featuring this character, and also later in two films not based on Deighton's novels.