Tamsin and her best friend Michelle have already been inseparable given that they were teens. Even now they spend almost all their period jointly, along with Patrick, Michelle’s good-looking husband. So when Tamsin hears a rumour that Patrick is definitely having an affair, she actually is furious and plots a scheme to catch him in the take action, using her helper Bea as live-bait. It ought to be fool proof. After all, Tamsin can trust Bea with anything, or can she?