'Do-gooders', says Harry Eckington, 'do better'. And as he sets off for a holiday in Snowdonia with his oddly assorted group of young friends rescued from the youth club and its supposedly homosexual leader, all seems set fair for a healthy, invigorating, uplifting week in the mountains, in spite of their handicaps. And all might have been well but for a group of psychopaths, bent on their criminal plans, who arrived on the remote plateau a few hours before the friends.There is a 'grand guignol' quality about Harry Doing Good which may suprise and delight.