Let the hype begin! Sony has pulled the plug on the silence this evening by unleashing the full theatrical trailer for Underworld: Evolution over at Yahoo! Movies. The sequel to the $100 million worldwide hit, which hits theaters January 20th, Underworld: Evolution continues the saga of war between the aristocratic Death Dealers and the barbaric Lycans (werewolves). The film traces the beginnings of the ancient feud between the two tribes as Selene (Kate Beckinsale), the beautiful vampire heroine, and Michael (Scott Speedman), the lycan hybrid, try to unlock the secrets of their bloodlines. The fast-paced, modern-day tale of deadly action, ruthless intrigue and forbidden love takes them into the battle to end all wars as the immortals must finally face their retribution. Directed by Len Wiseman and co-starring Bill Nighy, Tony Curran and Derek Jacoby. Watch this spot for interviews and set visits starting tomorrow!