American gangster enforcer involved in the witness protection plot.
Maigret applies increasing pressure to Pozzo as a possible protector of the fugitives.
Maigret traces the hit-and-run Chevrolet to Pozzo, questions him repeatedly, and suspects that he is hiding information.
Their workplace connection places Lily close to Pozzo's activities and information.
The plot identifies Lily as an employee of Pozzo, the owner of the Manhattan Bar.
Pozzo provides assistance to Bill while denying deliberate involvement with the other two men.
Pozzo admits that he helped Bill Larner and acknowledges that Bill was connected to Lily.
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