Tim Curry, <i>Criminal Minds</i> Tim Curry, Criminal Minds

Bad things happen in Los Angeles when the lights go out.

That was the idea Criminal Minds co-executive producer Erica Messer and the rest of the writers kept in mind when crafting Wednesday's season finale (9/8c on CBS).

Check out photos from Criminal Minds

Criminal Minds' Matthew Gray Gubler: "We pull a MacGyver cliff-hanger"