"Oh, shit." He'd done that, hadn't he? He'd forgotten that the tower would be just as fragile as the guardians. Kay wasted a valuable second dropping his face into his hand.

Insinct said to run -- but that girl was still in the tower, Kay remembered. If he got her killed through being an idiot...!

Kay ran into the tower and started leaping up the stairs, taking them six or seven at a time.