Something is stirring at the heart of the Empire. The dark hands of the followers of Chaos are stretching out, grasping at anything that will give them the power they need to bring the lands of Men, Dwarfs and Elves to ruin and despair. When, through a bizarre coincidence, a party of adventurers find themselves caught up in the machinations of a sinister cult, they quickly find that the only way out of the web of plots is through its very heart. So, as the Schaffenfest fair in Bogenhafen draws to its close, the petals of an awful bloom begin to unfurl, and the sickly smell of Chaos pervades the town. Can the adventurers find out what is happening before disaster strikes?In a recent poll of the leading games designers in France, the French RPG magazine Casus Belli awarded the Enemy Within campaign the title of the best RPG campaign ever published..The Enemy Within vol.1: Shadows over Bogenhafen, the first book in the campaign, starts off with a detailed description of the Empire, its society and the people who run it, complete with most of the background detail you'll need for this and future volumes. From there it presents 'Mistaken Identity', a prelude to the main campaign, and then the 64-page adventure 'Shadows over Bogenhafen', including maps of the Empire, Altdorf and the eponymous market-town, and copious player hand-outs as well.The Enemy Within vol.1: Shadows over Bogenhafen combines the original first two parts of the campaign, which were first published in the mid-1980s as 'The Enemy Within' and 'Shadows Over Bogenhafen'. It is recommended that you play 'The Oldenhaller Contract', the adventure in the Warhammer FRP rulebook, before starting the Enemy Within campaign. The Enemy Within campaign continues in Volume 2: Death on the Reik.