Isabella carlyle older sister of Lucy carlyle the unwanted child at the age of thirteen sent to Worcester to be an agent. But she was sent to a murderer who lost his talent years ago and was testing on teens trying to get talent back. What happens when he makes a mistake leaves isabella in London to die with a huge cut on her chest what happens when she's found by lockwood and rushed to the hospital what will happen next? This book is based on the TV show but credits to Netflix and Jonathan Straud for the books