After the breakout success of Lost in 2004, the following year saw three big-budget attempts at science fiction series with dense continuity. Unfortunately, it also saw those three series ultimately fail to hang on to their viewers, through internal problems or network mismanagement, and fans were left with three frustrating cliffhangers.

While they were allowed to complete more episodes than many series that followed them, I suspect this trinity of cancellations is a big reason current TV viewers are nervous about jumping on board complex shows with intricate continuity and details.

I watched Surface, Threshold and Invasion that season, but always found myself much more involved with the stories and drama unfolding on the latter of the three. Despite Katrina-related sensitivity due to its hurricane-themed opening, Invasion did an amazing job of building tension during a possible alien infiltration. V could learn a thing or two from this show.

Invasion aired for one season from 2005-2006. Check out Jonathan Toomey's great reviewcaps here.

Along with Surface, Invasion was one of my favorite new shows that season, with each episode getting better and better. By the series finale, I was hooked. I'm still miffed that ABC didn't give it more time to flesh out the story and characters.

Incorporating a sci-fi-alien mystery, a government conspiracy, and plenty of family drama, Invasion had a built-in audience because it aired directly after another sci-fi mystery, Lost. Unfortunately, it wasn't enough to keep the series on the air.

Yes, Invasion is still on. Of all the new Sci Fi shows that premiered on the big three networks this year, it's the only one that is still hanging on. I saw the first two episodes and quicky gave up because of the long stares from characters who may or may not be aliens. Oh, and I couldn't handle the premise that a hurricane was bearing down on the town and no one was evacuating (school was still in session, for crying out loud!). Anyway, I may have given up too soon because Jonathan really seems to dig the series.

On Sunday Saturday, April 15th, ABC Family will air ten back-to-back episodes of Invasion.