Key plot details
- Christopher discovers the body of Wellington the dog and decides to investigate his death despite his dad's warnings not to pry into other people's business.
- Mrs Alexander tells Christopher that his mum had an affair. He then discovers a box full of letters his mother has sent him and realises that she is not dead as he had been led to believe by his dad.
- Ed finds a distressed Christopher and confesses the truth to him. He tries to explain why he lied about his mother - he also reveals it was he who killed Wellington.
- Losing trust in his father, Christopher decides he cannot live with him anymore and so he must go to London to find his mother, Judy.
- Christopher gets on the train to London, very brave considering he has never left Swindon. He uses the London Underground and has a chaotic and eventful journey.
- Eventually he reaches his mother's flat. Her boyfriend, Mr Shears, does not like having Christopher around.
- Christopher and his mum leave, and move back to Swindon.
- Christopher starts to rebuild his relationship with dad. After his pet rat dies, Ed gives him a puppy.
- Even though he is only 15, Christopher takes his Maths A-level exam. He passes and gets an A*. By the end of the play Christopher is looking forward to the future.