A voyage round Agatha Christie

Joanna Moorhead meets Agatha Christie's grandson and finds there's more to the Queen of Crime than meets the eye ... her love of surfing, for example

The Penge Mystery: the murder of Harriet Staunton

In 1877, Harriet Staunton's husband and three others were accused of starving her to death and lurid newspaper reports of the Penge murder trial held the nation's rapt attention. A bestselling novel about the affair – written in 1934 and now republished – proves as gripping today

Jo Nesbø: ‘I am a vulture’

The bestselling Norwegian crime writer tells Andrew Anthony about the violence in his books, Anders Breivik and why his baddies are Arsenal fans