This is one of the great unfilmed “true” stories of World War II, that of the multi-lingual, quiz-show dazzling baseball catcher and coach  Moe Berg’s work as an OSS spy.

An all-star cast, headed by Paul Rudd but including Mark Strong, Sienna Miller, Jeff Daniels and Paul Giamatti, tells the story of Berg’s recruitment, training and espionage work to keep the Germans from developing the A-bomb.

“The Catcher Was a Spy” pens June 22.