" You think Bernadette Maguire killed him?”
“Uh… no. She’s, like I said, she’s old.”
“Old people can kill people too.”
“I know, but…”
“She could be a ninja.”
“She’s not a ninja, for God’s sake. She’s somebody’s great grandmother.”
“I want you to think carefully about this, Kenny. Have you ever seen her with a sword?”
“What?”
“How about throwing stars?”
“This is ridiculous.”
“Have you ever seen her dressed up as a ninja? That would have been my first clue.”
The girl sucked in her cheeks so she wouldn't laugh out loud. "

― Derek Landy , Death Bringer (Skulduggery Pleasant, #6)