"First day of work on a new gig," Mckenna wrote. "I could swear I've been here before. #YR #BB @BandB_CBS #AcrossTheHall"
Who the actor will play on B&B has not yet been revealed.
McKenna starred as Joey Buchanan on ABC's One Life to Live in the early 1990s. More recently, he played Patrick Westhill on The CW's 90210 and Nick Vera on NBC's State of Affairs.
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