In movies and TV, vampires – the blood-sucking undead – have held a firm grip on the public’s imagination. That popularity has now extended to Broadway. Correspondent Tracy Smith talks with actors L.J. Benet and Ali Louis Bourgzui, and director Michael Arden, of “The Lost Boys,” which has avoided the stake in the heart that befell other Broadway vampire musicals. Smith also talks with film professor Rebekah McKendry about vampire lore in the media.