Three nice people. Three terrible crimes. What made them do these awful things?

It’s the night shift worker who finds them. Huddled in a hospital store cupboard is elderly Edith Higgins. Knifed to death. Sitting behind her is Staff Nurse Lily Frampton, a scalpel clasped in her blood-soaked hand.

No one can understand why this kind-hearted, dedicated nurse would brutally murder a frail patient she’s spent months caring for.

That same day, mild-mannered schoolteacher Rod Black is found surrounded by the battered bodies of his pupils. Why would a well-respected teacher beat five schoolboys to death?

Then a third shocking — and equally inexplicable — incident takes place in a London homeless shelter.

What could turn three honest, upright citizens into cold-blooded killers?

Once again, DCI Bob Foreman calls on Ellie McEwan for help. Can Ellie use her extraordinary psychic gift to uncover the truth?