"Not yet," Conan says from his current position. "If you look at that grate, you'll see that the moss growing on it hasn't been disturbed." Standing slowly, he considered the scene as a whole. No traces of their killer's presence within the portion of tunnel, but that didn't mean they hadn't entered the tunnel. Either way, they'd dumped the torso and returned the grate, not noticing that some cloth had become caught in it ... and then what?