2 - as mentioned by others, no adultery, cheating, etc
Missed this when posting previously.
I'm a
huge believer in the theory that you can make a character do anything - so long as you ensure that you give them the proper motivation to explain their actions.
Having said that, an author would have to work really hard to make cheating in character, I think. Of course with a SF show you have more scope than with other formats.
If Clark was under some kind of spell/hypnosis/adultry-causing-ray gun blast
then that would work, I guess. You get the idea. <g> I said any story would have to be well-written above, but I'd forgotten to include the other must have - in character. Course, most times they tend to go hand in hand. But not always.
But, again, it would have to be well-written to carry me along for the ride. There are few things which turn me off a story faster than a difficult, complicated premise badly handled or dealt with in three pages.
LabRat