from TheTVDB: Team Venture, Conjectural Technologies and the Order of the Triad come together as Dean and Hank prepare to face an obstacle that is more intimidating then anything they have confronted before: a prom to celebrate their "graduating" high school, while Dr. Venture throws out all the stops to bring the twins the best dance $500 can buy. But when things go awry, the greatest battle in Venture history looms as two old enemies - the OSI and SPHINX - clash once again.

2010 episode

contained in

Season 4 (2009) - Questions are answered and truths are revealed. Learn how Henchman 21 copes with life without 24. See what happens when Brock and the Venture family are forced to part ways. Discover the final fate of H.E.L.P.eR. And all the while, the balance of the free world hangs in the hands of Dean Venture, who must kill Hitler.