Seven high profile guestsAn island cut off by a stormWill there be a murder before the weekend is out?After six long months with no new cases for her Cornish detective agency, Donna ‘Deadly’ Nightshade jumps at the chance to spend a weekend undercover on St Michael’s Mount.With seven high profile attendees – including the Home Secretary – this is a high stakes case. As a storm descends on the tidal island, they’re cut off from the rest of the world. Friends turn to enemies and before the rain has ceased it’s not just one murder Donna has to worry about – it’s two…