A notorious gangster who owns a nightclub. He hires Swifty, shoots the imposter Jimmy, and later uses Polly as a human shield against the police before being forced to surrender after his confession is recorded.
Finnegan leads the police effort to track and apprehend Dominic's criminal network.
Dominic is the primary target of the police investigation and ultimately surrenders.
Polly strategically feigns romantic interest to extract a confession from Dominic.
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