French friend of Antonio who invites him to Reims. Owns an empty house near the murder scene. Privately confesses to Antonio but is later mistakenly assassinated by Cathy's father.
Their friendship brings Antonio to Reims and later becomes central to the murder investigation.
Robert Maurisson is explicitly described as Antonio Berti's French friend and invites him to Reims.
His mistaken attack removes the witness who could have supported Antonio's defense.
Cathy's father mistakenly assassinates Robert while Robert is driving Antonio's car.
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