I remember a TV show I saw some years ago. It was about a weird area that starts to grow on Earth. Scientists can't control it, and we understand it's connected with aliens.
Humans send some people in it to find out something about it, but they lose connection with them immediately. I remember a woman that comes back from that (actually she didn't come back by herself but I can't remember how!), and sometimes she remembers some things about some experiments that unknown creatures did on her. I think they found a dead alien body too.