Larissa Salmina and Francis Haskell met by chance in a Venetian restaurant in September 1962. Prior to this fateful meal, Larissa escaped the siege of Leningrad and lived in the Urals, surrounded by Spanish revolutionaries. She became Keeper of Italian Drawings at the Hermitage and attended the 1962 Venice Biennale, where she stole ("I didn't steal it. I liberated it") a Matisse painting. Francis was a historian who never felt safe in England,...