Monday, 8.30pm, Seven Lapsed Revenge fans (Revengemites?) should know that this episode Truth — Part One — is the beginning of the end, the first half of the two-part second season finale. If, like me, you have found the show less rewarding this season (every time someone mentions ‘‘ the initiative’’ my blood freezes) this may be the time to tune back in to see how it all winds up. There will be a third season, but at some time in this two-hour epic a main character will die, which will inevitably change the chemistry of all that follows. And what’s all this about the truth? Could Emily (Emily VanCamp) reveal her true identity at last? Indeed she could, but that’s not the whole story.