ET- Sharing Pain

Again, the chief doctor nervously wiped his helmet. The boy and the monster were linked somehow, as if the monster were feeding on the child’s life. The child came in and out of consciousness, hallucinating, babbling, sinking under again. I’d cut the cord that ties them, thought the doctor, if I only knew where and what it was.
...

A needle punctured E.T.’s skin. On the table beside him, Elliott winced, as if the puncture had been into his own body. He turned toward the only familiar face, toward Keys. “You’re hurting him. You’re killing us . . .”

- E.T. the Extra-Terrestrial in His Adventure on Earth, chapter 15