Mark Shera
- Date of birth:
- 1949
- Mini Bio:
- Mark Shera (July 10, 1949, Bayonne, New Jersey) is an American actor , who is best-remembered for his role as J.R. in the popular television series Barnaby Jones In 1976, the character of J. R., the son of Barnaby's cousin, joined the cast. He first came to try to solve the murder of his father, but stayed around to help Barnaby and Betty while also attending law school. His Brother is CBS Evening News director Eric Shapiro.
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