Penthouse was really worth watching during its early seasons. Sadly, by the third season, everything just got boring.

Frankly, you lose sight of what the story was all about. Never ending people rising from the dead, twins, actors playing dual roles..... it was like milking something just because it became popular. I felt that the writer got too tired and ran out of ideas.
This is a classic example of knowing when to stop. Just because it got high reviews when it started doesn't automatically mean it will run true till the end.

I just watched this season to get closure. Sadly, I used to really wait for the next episodes to come out. But for Season 3, I could go for days without watching it.