Tess McCall (Patricia Kalember) had better be careful or she might find what she's looking for when she starts spying on cheating husbands. What starts out strictly as amateur sleuthing quickly turns into a full-time profession for this middle-aged mother of two. Using logic, intuition and numerous high-tech surveillance gadgets, Tess succeeds in helping jilted wives such as Sally Russell find out the truth about their wandering husbands. But catching unsuspected philanderers in the act is one thing; getting the goods on one that is a police officer is another - especially when he is married to her. When evidence starts pointing to her husband Craig's infidelity (Tom Irwin), Tess is faced with a difficult decision: whether to spy on his after-hours activities or believe that all these incriminating clues are the result of his own undercover police work. Like any good detective, Tess goes with her instincts. But she soon finds more than she had bargained for. Her work uncovers a long history of incessant womanising that she had been blind to for years.