A year ago, to cover her father's medical bills, Sara Wilson switched identities with her twin sister. She took her sister's place in a business marriage and entered the Gavin family. Over the year, she was extremely cautious, pleasing her husband and managing their home, without letting anyone suspect her true identity. A year later, her twin sister reappeared and demanded to switch back.Heartbroken, Sara had to step aside as her sister effortlessly took over her life. But her once indifferent husband was frustrated to find out his wife had been replaced.