The Subtle Knife is the second part of the trilogy that began with The Golden Compass . That first book was set in a world like ours, but different. This book begins in our own world. 5iPl4EV4e+ef9Yog329AqTVoUYSN5PVSbhUYPnoBse+p0jkOwbwgH1D4jQZCItlS