Sid Klein was a lawyer often used by the Corleone crime family.


Of Jewish descent, his father was a policeman, one of the few Jews on the force during the 1910s. Klein became renowned for his work during the anti-Communism trials and was put on rtetainer by Tom Hagen of the Corleone family, and later by the Tattaglia and Barzini families.

Sid represented Hagen when he was accused of murdering Judy Buchanan and successfully got him off the hook.

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