Some crimes never fade. Some names never lose their power to haunt.

In the 1960s, the quiet streets of Manchester concealed an unimaginable horror. Myra Hindley and Ian Brady—two ordinary faces hiding monstrous intent—lured innocent victims into their grasp, leaving behind a trail of fear, devastation, and grief that scarred Britain forever.

This is not just the story of their crimes—it is the story of their disturbing bond, a partnership forged in darkness that shocked a nation. As the moors kept their secrets, questions endured: how did such evil grow unchecked, and what truly drove them to commit atrocities that still echo through time?

The Devil Knows takes you deep into the twisted psychology of two of Britain's most notorious killers. Gripping, unsettling, and unforgettable, it's a chilling account that true crime readers won't be able to put down.