Because if he doesn’t re-kill the person he unkilled within a minute then somebody else dies. He killed his girlfriend’s father figuring that one out. And he was going to re-kill Chuck but got distracted. It’s a brilliantly quirky little show, I’m surprised it’s found an audience.
Thank you for the explanation. I didn’t watch very much at all before I stopped watching. I got more of the story off a news pormo show and started wondering how they dealt with this issue; especially if the show’s supposed to be good.