Christopher is 14 years old kid who need a special need. He pet a rat named Toby. His favorite color is red and he can remember a lot of prime number.
Christopher live with his dad in Swindon. His father told him that his mother was dead because of heart attack. But, he hasn't see his mom in the hospital
one night, he fund a dead body of wellington. And when police come and start asking a lot of question to Christopher, Christopher hit the police because he is asking a lot of question and touch him.
The police brought him to the police station. And then his father come and take him home.
his closest person in school is Siobhan. She suggest Christopher to write a book. Since he is good at math, he use prime number to mark each chapter and he is going to write about his detective work to find who kill Wellington
He ask a lot of people. then, he meet Mrs. Alexander who told him that his father didn't like Mr. Shears who is the ex-husband of the owner of Wellington. He hate him because he has an affair with his wife.