As the penultimate episode of the series, I was expecting a big two part build up to a satisfactory conclusion. If this had been shown part way through a season, I could have accepted it. This is a crime program in an sf series. Star Trek has done parallel universes much more successfully. Waste of an episode. Had hoped they would have developed the "friendship" between Todd and John. Program could have worked as the pilot to a spin off. Dreadful,dreadful, dreadful. Nice Rolling Stones soundtrack at the beginning. Ridiculous ending.