Overview: Sarah and David are the last of the group to succumb to hiring a nanny but, when confidences are broken on both sides, romantic betrayal and revenge lead to all-out domestic warfare. And trouble awaits them all when the nanny mafia moves into action.
Overview: Who is Stuart having an affair with? The nannies investigate. Sarah finds herself in an increasingly fraught entanglement with Ben and Katherine.
Overview: Beattie and Stuart's marriage is deteriorating, and Lisa is out for revenge.
Overview: In the final part of the dark comedy, Sarah and David find their marriage and friendship tested to the limit while the "nanny mafia" plot to save the day.