2. At which point did Matthew's parents in law start to wonder if his unnatural behaviour was a passing phase or not? - When it started to affect the family relationships.
3. Who is Matthew really talking to? - To an alien named Chocky.
4. How did David and Mary find out Chocky's name? - Matthew had a high temperature and begged his mother to make Chocky leave him alone.
5. How does it communicate with Matthew? - through his mind.
6. Where is Chocky coming from? - from another planet.
7. How many sexes are there? - Only one.
8. Why was Chocky sent to earth? - He was sent as an scout from his home planet.
9.