He knew this through the pain in his side, which felt like a white-hot ax blade between his ribs; he knew it through his shock (he was literally in shock in a number of ways) at discovering Chevette (this version of Chevette, with really different hair, more the way he'd always wished she'd wear it). He knew it in the dark that followed the report, the dark that followed the death (he was pretty sure) of whoever the man was who'd gone after Chevette, the man he'd decked, the man who'd gotten up and, it felt like, driven Rydell's broken rib halfway through his diaphragm. He knew it, and he held on to it, for the very specific reason that it meant the scarf was a trained professional, and not just some espontaneo in a bar.