1 of 1 people found the following review helpful
Great for older kids,
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This review is from: The Flight of the Silver Turtle (Paperback)
I have been reading the series to my 6 year old and he loves them. Takes a bit of time to get going, but very exciting at the end, and he loves all the gadgets. One word of warning: there are some very grown up themes. Tis one deals with the Second World War, the nazis and the holocaust. It mentions the wipe out of the Jewish race. The last book (7 professors of the north) talks about genetic engineering of humans, and mentions abortion! Important subjects at some stage, but not appropriate for a 6 year old. I'm glad I was reading it to him and could filter out these buts, but it does make the reading a bit less relaxing for me. An 8 year old would probably be reading these books by themselves, and you may not have the filter option.