Crusade was a bold step in another direction for the ultra successful Babylon 5 TV series. Set up in the prologue movie 'A Call to Arms' and taking place 5 years after B5 ends, Crusade follows the crew of the experimental destroyer Excalibur in a search for a cure from a deadly alien plague which is slowly killing the Earth, something in itself is amazing. Not many shows would cut off mankind's homeworld for the sake of a story, and in doing so lifted Crusade to a new level of Sci Fi.
The Excalibur is a mixture of Minbari, Vorlon and Earth technology, and resembles the Liberator from Blake's 7. The highlight of the ship has to be the Main Guns which converts all of the ship's energy into one savage laser beam, but renders the ship without power for one minute as it recharges. J. Michael Strackzynski, the show's creator, is a forward thinker, so much so that this ship was first mentioned back in Babylon 5's 5th season episode 'Movement of Fire & Shadow'.
Season One was a mixed bag. Lasting only 13 episodes due to a conflict with JMS and broadcaster TNT, there were only a handful of episodes that stood out. Out of those made, 'Racing the Night' was arguably the best. A desperate species suffering from the same plague as Earth, using any means necessary to find a cure; this episode posed more questions than people think. Had the series continued, it was promised the show would have taken on a new aspect, and the plague wouldn't have been the only thing the crew should be worried about...
All in all the show was definitely killed off before it's time. It had potential to rival or even surpass Babylon 5 in terms of excellence, but it seems we'll never know.