Deadlock

The business of parallel spaceships has been done before. This one stretched my credibility. Of course, one would have to buy into the whole business of the ship and crew being duplicated. That's a big if. Of course, the problem with series television, we can't wipe out most of the crew or even a few of the characters. So at some point this has to be reconciled. There are some moral issues as those grave robbers show up. Should one entity die to allow the ship to carry on? I guess, as others have said, the whole thing asks a lot of the viewer. Is there even a reality, existing in science fiction, that would allow this to take place? It was exciting and entertaining at times and the characters are heroic, but let's not ask too many questions.