bộ richmond robin readers level 1 cousins and crocodiles

Why did Susie's English cousins come on holiday if they didn't want to have fun? They are in the north of Australia - crocodile country! There's a lot to do and a lot to see, but Alice is always reading and Jamie is always naughty. Susie isn't enjoying her time with them. But when Jamie disappears and the family can't find him, things get really serious. Where is Jamie? Susie thinks she knows. Does she have the answer?