'The O.C.'s' Melinda Clarke will guest star on TNT's 'Dallas' in a classic role 

\'The O.C.\'s\' Melinda Clarke will guest star on TNT\'s \'Dallas\' in a classic role

Melinda Clarke has signed on guest star in two episodes in the third season of TNT’s 

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Clarke will assume the role of Tracy Lawton, a character who was introduced in the 12th season of the original series and was played by Beth Toussaint. In the original series, McKay was introduced in 1988 as a love interest for Bobby Ewing (Patrick Duffy), and it was later revealed that she was in fact the daughter of Ewing’s rival Carter McKay (George Kennedy).

Clarke will make her debut in the September 3 episode of 

‘s third season, which resumes on August 18.

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