Todd's grip on her was about a minute long. After he was sure he'd given her enough, he let go with an ugly sucking sound, the bloody wound healing up almost immediately with no sign having been there at all.

"Any better?" he asked, then cocked his head, "What is it?" He realized something incredible had changed judging from her expression. He knew it felt good but even for someone who was starved for touch, the enzyme-especially the relatively small amount he'd given her-wasn't that pleasure-inducing. So what was it?