The third and final piece of NBC's Monday night sci-fi block falls into place tonight, when My Own Worst Enemy makes its debut.

The show stars Christian Slater as Edward, a man who has volunteered for an experimental government program . . . and as Henry, the result of that program. The two share the same body but have wildly different lives: Henry has a boring desk job and a regular suburban life (wife, kids); Edward is a high-powered agent trained to take out foreign threats. Edward knows about Henry, but Henry has never known about Edward — until, that is, something goes wrong in the first episode and Henry starts "waking up" and becoming aware of Edward's missions.

What follows is a not great but still surprisingly watchable hour of TV. It's part Chuck (regular guy fights crime, somewhat against his will, with the help of government agents), part The Truman Show (guy discovers his whole life is a setup to serve someone else's purpose). On the negative side, the show's mythology is completely baffling to me — how, exactly, is this supposed to work? And though Slater is personable, he can't quite pull off playing two distinct characters; I often found myself confused about whether I was watching Henry or Edward.

At the same time, though, the show is fast-paced and has enough compelling moments that I could see myself tuning in beyond the first episode. It would be a good one to watch in a big batch over some lazy weekend, I bet. Do you have any interest in checking this show out? To watch a preview, just read more.

Photos courtesy of NBC