“Donegan Bane and Gracious O'Callahan - the Monster Hunters. Adventurers, inventors, authors of Monster Hunting for Beginners and it's sequels, Monster Hunting for Beginners is Probably Inadvisable and Seriously, Dude, Stop Monster Hunting.”

“This is stolen? We're in a stolen jet?""Not stolen," said Donegan Bane from the co-pilot's seat."Almost stolen," Gracious corrected."Semi-stolen," said Donegan."Quasi-stolen," said Gracious. Aurora's frown did not turn upside down. "So is it stolen or not?"Donegan and Gracious hesitated."Yes," they both said together.”

“What is it?' Stephanie whispered.'That, my dear Valkyrie, is what we call a monster.'She looked at Skulduggery. 'You don't know what it is, do you?''I told you what it is, it's a horrible monster. Now shut up before it comes over here and eats us.”

“The fact is that we have no way of knowing if the person who we think we are is at the core of our being. Are you a decent girl with the potential to someday become an evil monster, or are you an evil monster that thinks it's a decent girl?""Wouldn't I know which one I was?""Good God, no. The lies we tell other people are nothing to the lies we tell ourselves.”

“Being a detective isn't all about torture and murder and monsters. Sometimes it gets truly unpleasant...The fate of the world may depend on whether or not you can bring yourself to visit your relatives.”

“Can I ask you a question? You know with vampires and werewolves and goblins and things, is there any mythological creature that doesn't actually exist?""Of course," he replied. "The unicorn and the leprechaun would be would be the two main ones. The Loch Ness Monster isn't real, either, that's just someone called Bert.”

“Aurora sagged. "Why is it," she asked, "that every time I'm with you two we end up stealing something big?""We always return it," Donegan said, a little defensively. "Maybe not always in one piece or necessarily to the right person but return it we do, and so it is not stealing, it is merely borrowing."Gracious looked at him. "It's a little bit stealing.""Anyone who leaves a private jet just lying around deserves to have it stolen.""It wasn't lying around," said Gracious. "It was locked up tight. It took us an hour to dismantle the security system and get inside."Donegan looked at him. "You're not helping.”