Vlad (2004)

Four graduate students embark on a trek through a Carpathian forest to the ruins of Vlad the Impaler's castle. They are an American brother and sister, Jeff and Alexa; an Englishman, Justin; and a Romanian, Linsey, who is returning from studies in France. Serving as their guide is Adrian, a professor at the university. As it happens, one of the students is carrying an ornate medallion on a necklace stolen long ago from Vlad's tomb. The student is planning to return it, unaware that it can bring back Vlad and his times--five centuries past.