Forensic accountant Monica Bolland tracks down white-collar criminals, but when her husband Josh, an undercover agent for the FBI, is killed, she goes undercover herself to find his murderer. She gets a bookkeeping job with a criminal cartel but her cover is blown just as she discovers the devastating truth about her husband and the forces that brought him down.

Single mom Karen Clark hires Alex, a manny (a male nanny or au pair) to help with her two young sons, never suspecting Alex has other plans and wants her family as his own, even if he has to murder to achieve his goal.