The chilling thriller follows happily married high school sweethearts, Ivy (Anastasia Griffith) and David Ross (Brendan Fehr), as they prepare for the birth of their long-awaited first child, after years of trying and several miscarriages. Ivy's almost to term when the couple holds a yard sale to clear out old belongings and an old high school classmate, Melinda White (Clea Duvall), happens upon them and, coincidentally enough, she is also pregnant. A few days later, Melinda is reported missing, and all the bloody clues point to David. Could Ivy's faithful, loving husband have been having an affair with Melinda all along? As the story unfolds, dark secrets in Melinda's past come to light, and Ivy finds herself living in a nightmare.