Just when the Valley residents think life is getting boring, Nurse Brenda shows up on her squeaky bicycle with syringes planted in her hair. Cuthbert bears Nurse Brenda a grudge for past misdeeds, but this is one fanatical district nurse. When she sees the joker Percy with blue eyes and lips after he chewed on a pen, she goes into action. There is a terrible disease in the Valley; it turns its victims blue! Quarantine! The Valley is soon pitted against a brigade of district nurses and nearby a new hospital prepares a containment facility. Things are about to go to haywire, quite literally when a fence springs up around the Valley overnight. Hold onto your hospital beds! Book #8 in the Cuthbert series