Quotes:
He [Garrett] fell in quickly with the Denali sisters, asking endless questions about their unusual lifestyle. I wondered if vegetarianism was another challenge he would try, just to see if he could do it.
Pag. 611

I ground my teeth together, struggling to fouce the shield out to Garrett, who was closest to Kate.
PAG. 623

"Kate" Garrett called as the others murmured and drifted slighly away, disturbed by the moment of blindness; [...] The tall, sandy-haired Garrett was the only non-gifted immortal who seemed drawn to my practice sessions. I wondered what the lure was for the adventurer.
"I wouldn't, Garrett" Edward cautioned.
Garrett continued toward Kate despite the warning, his lips pursed in speculation. "They say you can put a vampire flat on his back."
"Yes" she agreed. Then, with a sly smile, she wiggled her fingers playfully at him. "Curious?"
Garrett shrugged. "That's something I've never seen. Seems like it might be something of an exaggeration..."
"Maybe," Kate said, her face suddenly serious. "Maybe it only works on the weak or the young. I'm not sure. You look strong, though. Perhaps you could withstand my gift." She stretched her hand out to my, palm up - a clear invitation. Her lips twitched, and I was pretty sure her grave expression was an attempt to hustle him.
Garrett grinned at the challenge. Very confidently, he touched her palm with his index finger.
And then, with a loud gasp, his knees buckled and he keeled over backward. His head hit a piece of granite with a sharp cracking noise. It was shocking to watch. My istincts recoiled against seeing an immortal incapacitated this way; it was profoundly wrong.
"I told you so." Edward muttered.
Garrett's eyelids trembled for a few seconds, and then his eyes opened wide. He stared up at the smirking Kate, and a wondering smile lit his face.
"Wow," he said.
"Did you enjoy that?" she asked skeptically.
"I'm not crazy," he laughed, shaking his head as he got slowly to his knees, "but that was sure something!"
"That's what I hear."
Edward rolled his eyes.
PAG. 624-625

Only Kate and Garrett were in the front room, arguing playfully about the nutritional value of animal blood. I inferred that Garrett had attempted a hunting trip vegetarian-style and found it difficult.
PAG.671

"The redcoats are coming, the redcoats are coming," Garrett muttered mysteriously to himself and then chuckled once. He slid once step closer to Kate.
PAG.680

Garrett flung himself at her [Kate], knocking her to the ground again. He bound his arms around her, locking his hands around his own wrists. I saw his body spasm as she shocked him. His eyes rolled back in his head, but his hold did not break.
PAG.709

I pulled my shield even thigher around the sparks of my friends, peeling it back carefully from Kate while trying to keep it around Garrett, making it a thin skin around them.
And then Garrett was in command of himself again, holding Kate to the snow.
"If I let you up, will you knock me down again, Katie?" he whispered.
She snarled in response, still trashing blindly.
PAG.709

Kate was finally still. Carlisle and Garrett continued to console the sisters with words too urgent to sound like comfort.
PAG.710

And Garrett freed Kate to take a step forward, ignoring Kate's hand as she tried to caution him this time.
PAG.715

"If we live through this," Garrett whispered to Kate, "I'll follow you anywhere, woman."
"Now he tells me," she muttered.
PAG.724

Garrett picked Kate up off the ground and swung her around in a circle.
PAG.740

The Denalis were the last to leave, Garrett with them - as he would be from now on, I was fairly sure.
PAG.744