"Now, if any of us finds the unicorn, we'll send up green sparks, right? Get yer wands out an" practice now - that's it - an" if anyone gets in trouble, send up red sparks, an" we'll all come an" find yeh, so be careful, let's go." The forest was black and silent. A little further into the undergrowth they reached a fork in the earth path, and Ron, Draco, Neville and Hagrid took the left path while Harry, Henry, and Fang took the right. They walked in silence, their eyes on the ground, every now and then a ray of moonlight through the branches above lit a spot of silver-blue blood on the fallen leaves. They walked for nearly half an hour, deeper and deeper into the forest, until the path became almost impossible to follow because the trees were so thick. Harry thought the blood seemed to be getting thicker. There were splashes on the roots of a tree, as though the poor creature had been thrashing around in pain close by. Harry could see a clearing ahead, through the tangled branches of an ancient oak.