For many, the thought of childhood conjures images of hopscotch games in quiet neighbourhoods, and sticky visits to the local sweet shop. For Penelope Sotheby, childhood meant bathing in Bermuda, jiving in Jamaica and exploring a string of strange and exotic British territories with her nomadic family. New friends would come and go, but her constant companion was an old, battered collection of Agatha Christie novels that filled her hours with intrigue and wonder. Penelope would go on to read every single one of Christie's sixty-six novels--multiple times--and so was born a love of suspense tha...