A female bounty hunter holds an innocent man hostage as bait to trap his future-self: a fugitive killer from 20 years in the future able to project mind-warping illusions.

I don't know. I actually use these loglines to pitch to producers, etc. and while a logline can always be improved I tend to get superstitious and stick with whatever gets me requests for a synopsis.

I've just removed the "future"s for an easier read.

A female bounty hunter holds an innocent man hostage as bait to trap the hostages?future-self: a killer from able to project mind-warping illusions.