Murder On A Cornish IsleSeven high profile guests An island cut off by a storm Will 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 Michaels Mount. With seven high profile attendees including the Home Secretary this is a high stakes case. As a storm descends on the tidal island, theyre cut off from the rest of the world.