A former Mossad lieutenant colonel and Israeli Police officer, Avner is deputy editor of Israel Intelligence Heritage Center magazine, as well as a lecturer, film producer and exhibition curator. Avner is a renowned expert on Mossad operations who famously worked to reveal and publicize the inside story of the historic 1960 capture of Nazi war criminal Adolf Eichmann.

While working as a Mossad agent, Avner discovered the original documents surrounding Eichmann's capture and trial, and — moved to share his findings with a wider audience — he curated the world-famous and headline-making museum exhibit Operation Finale: The Capture and Trial of Adolf Eichmann, and produced an accompanying documentary.

With the story now the subject of a major motion picture — MGM's Operation Finale starring Oscar Isaac and Ben Kingsley — for which Avner served as senior consultant, he is in demand for his  insights into this rich chapter of Jewish history and engaging anecdotes from his time as a spy. Avner also served as a Mossad consultant on the Netflix series Inside the Mossad.