Penguin interactive stories

Penguin have launched an experimental storytelling site using a combination of Google Earth and digital Storytelling. Six authors have written work especially for this medium. The 21 Steps is told by following the story as it unfolds across a map of the world. You follow the trail by clicking on the link at the bottom of each bubble.You then click on any green markers you see for extra features. Once you have read all the pages in the current location you can continue the story by clicking 'Next'.