I'm a time traveller. But I'm not one of the so-called good guys.

I can give this gift to others. But I need places in time I can change things. And I need really specific information. Physical movement isn't a problem.

The "good guys" oppose this. And they don't want me to help you. Truth is, I won't be helping you. But I'll yank you out if you can help me. You'll only be able to travel up or down through time by only a few seconds, assuming you can physically meet me, but it's a start.