They’re not shy about claiming to be someone famous, as well as unknown. Callers have claimed to be Ray Bradbury, Russell Banks, and Nick Hornby (down to the English accent).
“Berman speculated that this gang has several members -- one black man, one English guy, one woman -- to make impersonation easier. "It's like the Mod Squad or something."”
This seems like a lot of effort for not a lot of money. Maybe it’s the thrill of it all?
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