Tears of a Dragon by Bryan Davis

Book 4 of Dragons in Our Midst

Summary:

In this fourth installment, a vicious evil has been unleashed on the earth that only the dragons can defeat. With Billy's father, the great Clefspeare, missing, Billy and Bonnie must lead the dragons into war against the Watchers--demonic beings as old as the earth itself. Masters at the art of deception, the Watchers use the deadliest of weapons against humankind. 

A remnant of wise humans--the friends of the dragons--unite in the struggle against the Watchers. With heart-stopping action, the final battle between dragons and their enemies comes to a climax. But in order to win the war, at least one of the dragons must die. 

As the story ends, Billy and Bonnie are faced with the greatest decision of their lives. Will they keep the dragon traits that have cost them so much danger and heartache or will they turn to normal human life and end the slayers' lust for their blood forever?

Opening Lines: 

Bonnie leaned against the bedrail and clutched Sir Barlow's burly hand. "I'm glad you're feeling better."

Barlow smiled, lifting his mustache. His dark eyes sparkled. "Yes, Miss. Thanks to an infusion of your blood, I am as fit as a fiddle." The knight's brow furrowed under thick strands of unkempt hair. "That is the correct idiom, isn't it?"

Bonnie tightened her grip on Barlow's hand and laughed. "That's the perfect idiom for a true gentleman!"