DCI Jack Parker has faced some tough cases, but with a serial killer stalking the streets of Newcastle and one of his closest colleagues lying in the mortuary following a hit and run he thinks things are about as tough as they've ever been.

But he should know that trouble always comes in threes. Jack is about to face the biggest challenge of his life, one that will end his career and destroy his family: Early Onset Dementia. As he does everything he can to hide his deteriorating condition from his family and colleagues, Jack believes that the serial killer is haunted by his childhood while his own memories are built on increasingly shifting sands.

The race against time to save lives, including his own, has begun.