Some kind Mnetter recommended these (never read these as a child) they are wonderful. Think a little (well actually a lot) too scary for DS aged 4 but quite tempted to get these lovely hardbacks for when he is older. He is absolutely loving the 'Uncle' books which I loved as a child in the same imprint
here and thinks they are hysterically funny-DH doesn't 'get' them at all though so not for everyone.