Misc: In 1913 Jesse---------- , athlete, spoiled Hitler's Olympic plans in 1936, born. ?

Questions

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'?

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

What number results if you add the number of Commandments to the faces of a regular icosahedron?