Harriet Farmer is attacked in woods on her way to elope with boyfriend Finn Robson and left in a coma.Finn vanishes and a year later,as the annual Bishopwood chess tournament begins,Harriet wakes up with temporary amnesia. The chess club president,unpopular writer Edward Stannington is murdered,his sole heir being his dippy aunt Vivian. Barnaby learns that Stannington is the fa......