Oliver shrugged. "Because..." He stopped, suddenly at a loss of words. Or rather at a loss of words that didn't sound completely and utterly corny and ridiculous.
'It's a dirty job, but someone's got to do it?' - Ridiculous. 'All that's needed for evil to triumph, is for good men to stand by and do nothing?' - Who was he to quote stuff at her?
So Oliver merely shrugged again and smiled. "Seemed like a good idea." He studied the girl more closely, then frowned as a thought occurred to him.