At the turn of the 20th century the Metropolitan Police were overwhelmed with bizarre cases so they turned to outsiders including Houdini and Doyle, who collaborated with New Scotland Yard on some unsolved and inexplicable crimes.

On the surface Kitty, Margot, Bree and Olivia appear to have nothing in common - but there’s one passion which unites them: to expose injustice. They form their own secret society, DGM - they Don’t Get Mad, they Get Even - playing anonymous pranks to expose bullies.