In 'Twin Peaks', whose murder does Agent Dale Cooper investigate?

In 'The Walking Dead', what is the name of the sheriff's deputy who leads the survivors? What are the zombies usually called by characters in 'The Walking Dead'? In 'Lost', what airline flight crashes on the island? In 'The X-Files', what are the names of the two FBI agents? In 'Buffy the Vampire Slayer', in which fictional town does Buffy live? In 'Star Trek', what is the name of the starship commanded by Captain Kirk? Who played Captain James T. Kirk in the original 'Star Trek' series? Who played Spock in the original 'Star Trek' series?