^I loved this series, but I got bored of it after the first five books. It is about three siblings who go and spend the summer with their cousin George while their parents are on vacation. The four start warming up to each other after George shows them her secret dog, Timmy, and her favourite place to go. They end up solving a mystery and catching thieves and trespassers. This is a really fun series, and of course, my favourite character was Timmy the dog.