In a horrifying plot scarier than Sarah Michelle Gellar EVER faced on “Buffy the Vampire Slayer,” a creepy “Goth” cult of so-called “fans” are threatening to murder her fiance, Freddie Prinze Jr. — who’s now being shadowed by a round-the-clock bodyguard! Sarah Michelle’s worried sick about the death threats from the weirdo freaks, who claim to idolize her! The cult-like group started sending the threats to Prinze a few weeks ago — warning he’s a dead man unless he breaks off his relationship with Sarah Michelle immediately . . . and never goes near her again! Prinze took the threats in stride, but his future bride insisted on hiring the 24-hour bodyguard AND calling in the police! They’ve launched an intensive investigation . . . and folks, NOBODY’S making jokes about wooden stakes and garlic on this one! Stay tuned.