Montgomery Scott

In the days that followed Grey's assassination attempt on the captain, Scotty had spent most of his off duty time tracking her, following her, learning her behavioral patterns, filing the details away until such a time as he could use them. Usually, when he needed someone dead, he'd send one of his people to do it, especially if the target in question was a woman. But Grey was a different matter. Grey had tried to assassinate the captain, had almost succeeded, and the minute Jim Kirk had stumbled into Engineering clutching at a knife wound in his side, Grey had signed her own death warrant.

( You Can Go Anywhere You Wish / Cause I'll Be There Wherever You Are )