Fix coherence of the sentence: Bruce Wayne had seen to it that all of his buildings were quake-proof up to 8.5. However, unable to quake-proof his own home without exposing his secrets as Batman, Wayne Manor and the Batcave are destroyed.
Bruce Wayne had seen to it that all of his buildings were quake-proof up to 8.5. Unable to quake-proof Bruce Wayne's own home without exposing his secrets as Bruce Wayne, Wayne Manor and the Batcave are destroyed.