The subtle knife – philip Pullman 

IT LOOKED AS IF SOMEONE HAD CUT A PATCH OUT OF THE AIR.

BUT WILL KNEW WITHOUT THE SLIGHTEST DOUBT THAT THAT PATCH OF GRASS ON THE OTHER SIDE WAS IN A DIFFERENT WORLD.

LYRA AND PAN HAVE STEPPED INTO A WORLD THAT FEELS ODDLY EMPTY UNTIL THEY MEET WILL, A MYSTERIOUS BOY WHO SEEMS TO HAVE NO D/MON BUT WHO QUICKLY PROVES HIMSELF TO BE A WORTHY ALLY IN LYRA'S SEARCH FOR THE DANGEROUS SUBSTANCE CALLED DUST.

TOGETHER THIS UNLIKELY PAIR DISCOVERS A DEADLY SECRET:

A KNIFE THAT CAN CUT THE FABRIC BETWEEN WORLDS. MANY OTHERS WANT THE KNIFE AS WELL, AND SO LYRA AND WILL FIND THEMSELVES CHASED FROM WORLD TO WORLD, NEVER SUSPECTING HOW TIGHTLY THEIR STORIES ARE BOUND TOGETHER, UNTIL THEY ARE VIOLENTLY SPLIT APART.