When Esti Mensch meets Mark Gassler at her mother's engagement party, she never expected to fall in love. Ignoring all the warning signs, Esti becomes pregnant with Mark's baby and agrees to marry him. However, on the eve of their wedding, Esti discovers that Mark may be linked to his ex-girlfriend's disappearance. She decides to confront him, but Mark eases her worries by stating that he was wrongfully accused, and convinces Esti to go ahead with their marriage.
After their son is born, Esti begins to suspect that the accusations against Mark were true, and she decides she wants to divorce. However, in an attempt to control her, Mark convinces everyone that Esti is having a mental breakdown. Determined to prove herself as sane, Esti contacts a reporter who had investigated Mark's ex-girlfriends' disappearance, who informed her that Mark was likely involved in not only his ex-girlfriends' disappearance but also a series of other murders and cover-ups involving an attorney of a cabal of old-money millionaires. Eventually, Esti uncovers evidence that proves Mark is a serial killer and tries to help the reporter expose him, but her attempt backfires and lands her in jail.
With the help of a detective and a fellow inmate, Esti is able to escape Mark's corrupting influence and attempts to reunite with her son, whom she had hidden before embarking down this dangerous path. But after three years apart, she had begun to doubt taking her child from the family who had been raising him. Esti must now face a painful choice: reclaim her son or leave him with the only family he's ever known.
