Acting definitely runs in the family for Murphy Brown star Tyne Daly and her younger brother, Tim, star of Madam Secretary. Watch the season finale of Murphy Brown on Thursday, Dec. 20 at 9:30/8:30c on CBS and CBS All Access. Watch the 100th episode of Madam Secretary on Sunday, Dec. 23 at 8:30/7:30c ET on CBS and CBS All Access.
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