As the author Niall Edworthy notes, "a young medievalist — Otto Rahn — was dispatched to find the Holy Grail by the Ahnenerbe, a pseudoscientific branch of the SS established in 1935.

Archaeologists are buzzing with the astonishing claim that they may have discovered Jesus' Holy Grail cup beneath Jordan's renowned Al Khazneh, famously depicted as a temple in Indiana Jones and ...