Famous fictional detectives:
Sherlock Holmes: Not a Jew
Hercule Poirot: Not a Jew
Miss Marple: Not a Jew
Auguste Dupin: Not a Jew
Commissaire Maigret: Not a Jew
Sam Spade: Not a Jew
Philip Marlowe: Not a Jew
Kojak: Not a Jew
Inspector Clouseau: Not a Jew
Inspector Morse: Not a Jew
Jessica Fletcher: Not a Jew
Columbo: Not a Jew
Well, at least Columbo was played by one...
Sigh.