Pretty exhausted by our move to the new town, we Robinsons need a holiday and Mum and Dad have hired two caravans at Westsea so we can all have a nice summer break. But why is my young brother Tony behaving so mysteriously, disappearing off all the time and making Dad furious? It's going to ruin our holiday! Why won't he let us meet a new pal called Sam and why are they looking for a boy with a fringe?

When my best friend Lindy and I decide to investigate, it leads us straight into danger..

As told to ANNE DIGBY, bestselling author of the Trebizon boarding school series and the Further Adventures of the Naughtiest Girl.