Join the Sleepover Club: Frankie, Kenny, Felicity, Rosie and Lyndsey, five girls who just want to have fun – but who always end up in mischief. It's treasure-hunting fever when the girls discover buried gold in Lyndz's back garden. Should they take the softly-softly Time Team approach Fliss wants, or the gung-ho metal-detector approach Frankie is in favour of? One thing is certain, there won't be much left of Cuddington by the time the Sleepover Club has finished digging...