The girls have different goals, different friends, and different lives, but they share one very big secret: They're all members of Don't Get Mad, a secret society that anonymously takes revenge on the school's bullies, mean girls, and tyrannical teachers. But when their latest target ends up dead with a blood-soaked "DGM" card in his hands, the girls realize that they're not as anonymous as they thought - and that someone now wants revenge on them.
"Draws you in"
Josie Byrne's life is spiraling out of control. Her parents are divorcing, her boyfriend, Nick, has grown distant, and her physics teacher has it in for her. When she's betrayed by the two people she trusts most, Josie thinks things can't get worse. Until she starts having dreams about a girl named Jo. Every night at the same time - 3:59 a.m. One night Josie awakes to a shadowy image of herself in the bedroom mirror - Jo. Josie and Jo are doppelgängers living in parallel universes that briefly overlap every 12 hours at exactly 3:59.
The members of Don't Get Mad aren't just mad anymore...they're afraid. And with Margot in a coma and Bree under house arrest, it's up to Olivia and Kitty to try to catch their deadly tormentor. But just as the girls are about to go on the offensive, Ed the Head reveals a shocking secret that turns all their theories upside down. The killer could be anyone, and this time he - or she - is out for more than just revenge.