Winter

A definite page turner and good start to a series. A computer running a simulation for military training has come unglued from its mooring. The simulation is the Demi-Monde - a world within which dupes (duplicates of real people from history) battle against each other for supremacy. The president's daughter is trapped inside the simulation and if she dies in the simulation then she dies in real life. An unlikely heroine is found to go into the simulation to save her. Its all ridiculous and over the top but its fun and decently told.