"The battle lines are drawn. Whose side are you on?"--Cover.

Rivalries and resentments between mums and non-mums spiral wildly out of control in the compelling new book by the bestselling author of The Fifth Letter. Poppy and Annalise are driven mad by mums enjoying special privileges at work while they pick up the slack. Setting up a Facebook group to vent about smug mummies is just a healthy outlet - right? But as their new group's membership soars, the frustrated women start confronting mums in the real world. Cafes become battlegrounds, playgrounds become warzones and offices have never been more divided. A rivalry that was once harmless fun is about to spiral out of Poppy and Annalise's control. Because one of their members is a wolf in sheep's clothing. And she has an agenda of her own ...