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Mark Wallace, the new E.R. doctor, started out as Penelope Baker's "Plan B." Dating him might make her "Plan A" man take notice. But when Penelope and Mark witnessed a terrible car accident, and risked their lives to free the injured occupants, a strong bond was formed. Penelope was through with games, and she quickly accepted Mark's marriage proposal. But just weeks before the wedding, Mark discovered Penelope had been dating him to make another man jealous. Mark was stunned and refused to listen to Penelope's explanations. Would it take another life-or-death crisis for Penelope to prove the true depth of her love...'