As they walked through the forest, heading toward the camp, Sin appeared thoughtful. Rein didn't probe, though he easily could have. He waited, hoping Sin would share on his own whatever was on his mind. "The screen..." he finally said. "What of it?" "Why didn't you use one when we were trapped in that damned sabeen den, so we could have gotten out of there sooner? For that matter, why not put up one around us when we've been traveling, to keep anyone from seeing our passage?" "A screen can only be in a fixed position," Rein explained. "You can't put one up around yourself and move with it. And in the sabeen's den, we were caught in that hole in the ground and surrounded on all sides by Raul's troops. I did put up a screen at the entrance, but we were still trapped there with no