When Chris's class writes off to a French school for penfriends, Chris is the only child not to receive a reply. Disgruntled at being left out, he climbs to the top of a high rock. Lost in his thoughts he suddenly sees the clouds funnelling above him and an odd piece of paper floating down.
Used availability for Philip Curtis's Pen Friend from Another Planet
October 1990 : UK Hardback
March 2000 : UK Paperback