Lord Peter Wimsey/Harriet Vane

It is 1936, and Lord Peter Wimsey has returned from his honeymoon to set up home with his cherished new wife, the novelist Harriet Vane. As they become part of fashionable London society, they encounter the glamorous socialite Rosamund Harwell and her wealthy impresario husband, Laurence. Unlike the Wimseys they are not in love - and all too soon, one of them is dead. A murder case that only Lord Peter Wimsey can solve.

In A Presumption of Death, Jill Paton Walsh tells how World War II changed the lives of Peter, Harriet and their growing family. The story opens in 1940. Harriet Vane - now Lady Peter Wimsey - has taken her children to safety in the country. But the war has followed them: glamorous RAF pilots and even more glamorous land-girls scandalise the villagers; the blackout makes the nighttime lanes as sinister as the back alleys of London.

It was 1921 when Lord Peter Wimsey first encountered the Attenbury emeralds. The recovery of the magnificent gem in Lord Attenbury's most dazzling heirloom made headlines - and launched a shell-shocked young aristocrat on his career as a detective. Now it is 1951. A happily married Lord Peter has just shared the secrets of that mystery with his wife, the detective novelist Harriet Vane. Then the new young Lord Attenbury - grandson of Lord Peter's first client - seeks his help again, this time to prove who owns the gigantic emerald that Wimsey last saw in 1921.