New mom HALLIE REYNOLDS (32) is devoted to baby AVA, who had a heart transplant when she was born; but motherhood is exhausting and her mother-in-law is overbearing, so Hallie is thrilled when she makes a new friend in MEGAN BANKS (34). Hallie's life takes a sinister turn as danger seems to follow her every move, and she starts to question whether someone is out to kill her and take her child - or if it's just her mind playing tricks.
