Walk on Water (2004)

"He was trained to hate until he met the enemy."

Eyal, an Israeli Mossad agent, is given the mission to track down and kill the very old Alfred Himmelman, an ex-Nazi officer, who might still be alive. Pretending to be a tourist guide, he befriends his grandson Axel, in Israel to visit his sister Pia. The two men set out on a tour of the country, during which Axel challenges Eyal's values.