Preview: A Crack In The Swiss Vault

|Swiss bank accounts offered people, including U.S. tax cheats, a safe place to hide money. But the largest Swiss bank has released formerly sacrosanct data on its U.S. customers because of tips provided by whistleblower Bradley Birkenfeld, who tells Steve Kroft some of the secrets Swiss bankers never tell. Sunday, Aug. 15, 7 p.m. ET/PT.

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