Here's a look at tonight's sci-fi TV:
Stargate Universe, 'Incursion Part' – It's part one of the two-part SGU season finale! Rhona Mitra returns as Kiva as the Lucian Alliance boards Destiny and takes members of the crew hostage. Elsewhere, Gen. O'Neill decides to strike back against the Alliance, and Col. Telford eats a few more knuckle sandwiches while begging for his life. (9 p.m. ET on Syfy)
Head after the jump for preview clips.