Although he may only be one of the many evils Marty Byrde is contending with, in what series does Kansas City mob boss, Frank Cosgrove, appear?

Ozark sees Jason Bateman's character juggling a lot of baddies, as he tries to keep his head above water and his family alive. His office is blown up by the head of the Kansas City mob, Frank Cosgrove, in the second season finale for reneging on a deal.

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