This honest, engrossing Israeli feature spins the tale of Eyal (Lior Ashkenazi), a Mossad agent on the trail of Nazi war criminal Alfred Himmelman. Alerted to a possible lead, Eyal poses as a tour guide to gain the trust of Himmelman's über-liberal grandchildren: Pia (Caroline Peters), who now lives on a kibbutz, and her gay brother Axel (Knut Berger), who is visiting from Germany. Shuttling between Jerusalem and the Sea of Galilee, Eyal and Axel strike up a hesitant, odd-couple friendship; director Eytan Fox nimbly navigates the thorny issues in their path (suicide bombers, German guilt, sexual and racial intolerance, et al).

Credibility becomes strained only in the final act, when Eyal arrives unexpectedly in Berlin, waving his gun on the underground and all but wearing a "Mossad Agent" T-shirt, and yet somehow still manages to wangle an invite to the Himmelman family reunion. Until then, Walk on Water barely puts a foot wrong. Its passion and humanity make most other movies seem pallid by comparison.