No, it doesn't, does it? He reached through the bars to grab his wrist as soon as he got close. But what does? He looked directly into the doctor's face, meeting his eyes. Look at me!
From there, all he had to do was work with Nightmares. He had done it before, more than once even. The first few times had been an accident, but he was slowly learning how to use it better. One thing he hated was not knowing exactly what he would pull from another's mind. Whatever came out, he would just have to work to add to it himself. For now, though, he just had to find something good and use it to incapacitate whatever was still human, even if it was only temporary. So suspicious, Distrust! Do you even trust there's earth under your human's feet? Why don't you let him scream for help? There's no way that can go wrong.