The Madness Underneath by Maureen Johnson

When madness stalks the streets of London, no one is safe. There's a creepy new terror haunting modern-day London. Fresh from defeating a Jack the Ripper killer, Rory must put her new-found hunting skills to the test before all hell breaks loose. But enemies are not always who you expect them to be and crazy times call for crazy solutions. A thrilling teen mystery.
Binding: Paperback / softback