It even takes its framing plot from another show, Brimstone. A specific number of bad guys go missing from Hell/Alcatraz and must be returned there, laying the groundwork for escapee-of-the-week episodes. Except the prisoners don't really escape; they're sent forward in time to do damage (we're supposed to be asking by whom? For what purpose? Why this particular year? Etc.). Even with all its borrowings, that's not a bad set-up for a series. But the show itself isn't...well, it just isn't.