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. T0YdDUjftqaYGRjE4hYW5jzG6Sij1ShmhO+Rv3FZFNzoGZr2zaEKLlRs6bRFejxZ