“Goodfellow is getting uncomfortable,” the cat said, as we reluctantly pulled away. “And the guardian is waiting for you. Perhaps we can refrain from celebrating until after it is defeated.” He sniffed as I rolled my eyes, grabbing my sword from where I’d jammed it into the earth. “Also, I feel obligated to point out that the sentinel is very near invincible now. Its scales will turn away most sword blows, and it is impervious to magical attacks. A frontal assault would be most unwise.”

“Okay, so how are we supposed to kill the thing?”

Grimalkin sniffed. “How was Achilles finally defeated? How did the dragon Smaug meet his end? There is always a chink in the armor, human. It is small, but it is always there.”

A piercing hiss rent the relative silence of the glade, making me flinch, and Grimalkin disappeared. The huge snake had uncoiled, and was towering in front of the tree, its tongue flicking the air rapidly. And then another arrow-shaped head rose up where the tail should’ve been, identical to the first and just as frightening. The two-headed serpent hissed again, sounding angry and defiant, flashing twin pairs of very long, curved fangs.

“Uh, guys?” Puck glanced over his shoulder at us. “Not to be rude and all, but this thing is starting to eye me like I’m a big tasty mouse. I hope you two are planning to join the party soon.”

I shared a glance with Ash, who waited quietly, not looking at the snake or Puck or Grimalkin, but at me. “Ready for this?” I asked him, and he nodded, gesturing with his sword.

“Lead the way, my queen. I’m right beside you.”

We left the trees, walking calmly across the field, side by side. The monstrous, two-headed snake hissed a challenge and reared up into a coiled S, ready to strike.

“How you wanna do this?” Puck muttered as we got closer. The sentinel’s beady eyes followed us as we approached, never blinking, and it had gone perfectly, dangerously still. I felt the tension lining its huge body, like a rubber band stretched to breaking, and my heart pounded.

“You take one head,” Ash replied, his narrowed gaze on our opponent. “I’ll take the other. Meghan, that will give you enough of a distraction to look for the weak spot. And let’s hope Grimalkin knows what he’s talking about.”

“Weak spot?” Puck echoed, looking confused. “What weak spot? Last time we fought this thing, we just hacked it to—”

One snake head lunged. Insanely fast, it darted in, jaws gaping, a dark blur that took me by surprise. Puck, however, was ready for it. He leaped straight up and, as the snake’s jaws snapped shut in the place he had been, landed on the flat, scaly head.