Richie Fusco died last year, pmac. He was originally a Brooklyn guy, like Greg. And much like Greg, he ended up in Scarsdale. But from what I understand, Richie never sold his house in Brooklyn. Which makes sense, because Brooklyn's the Colombo power base.
Richie's the only Colombo guy that I recall ever getting anything going in the Bronx/Westchester area. Not that it was much anyway. He was the Colombo point man for the Westchester Premier Theatre, and much later he and Greg had a little thing going in a local restaurant. But it didn't last.
As far as Frank and Greg?? If they didn't, they were more than willing to
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