Portal Through Time (Buffy the Vampire Slayer)

When a zealous devotee of the Master obtains a time-traveling device and dispatches vampire assassins to kill slayers from different periods in history, Buffy and Angel manage to steal the artifact, which provides them a limited window of opportunity to slay the assassins. Original. (Tie-in to the syndicated television series, created by Joss Whedon, starring Sarah Michelle Gellar, James Marston, Alyson Hannigan, Nicholas Brendon, & others) (Horror)