Frank Erickson testifies before the Kefauver Committee in New York City in 1951

The video discusses the efforts to expose a nationwide organized crime network in the US, focusing on Frank Erickson, a key figure in bookmaking. Despite attempts to extract information from him, Erickson, with his lawyer, consistently invoked his legal rights to avoid self-incrimination.

What legal device did Frank Erickson use to avoid answering questions?

What grounds did Erickson cite for refusing to answer the committee's questions?