Misc: What race's winner is draped with a blanket of roses?

Questions

Which girl's name links Stephen King novel, Cliff Richard single and Princess Leia in 'Star Wars'?

Which number results if you add the number of Apostles to the number of sides in a decagon?

Which Agatha Christie title comes from a nursery rhyme involving a mouse?

Which day of the week links an Easybeats single, a killer called Jason and Robinson Crusoe?

What is the name of Morticia's husband in TV's 'Addams Family'?