Star Trek: Enterprise: Season 3, Episode 6

3 - 6: Exile

A powerful and lonely telepath named Tarquin begs Hoshi to visit his faraway planet. Smitten with her, he offers to part with crucial intelligence on the Xindi only after she visits. But when Enterprise returns to pick up Hoshi, Tarquin refuses to let her go. He wants her to be his new Companion.