Its a nice try, good acting Great Cast overall that disapears from time to time in a script that was super on season 1,ugly on season 2 and good A- in season 3. The paradox were endless the time lines distorted and even so i grade it 5, why? General idea scifi with potential, sweet acting by main charecters,and sound editing that made the whole show a good feel one. As for script? If i could grade alone, 1- at best , left too many holes of the story that could have been a general great plot. Good effort by NBC producers, better luck next time.