Possible Clues:

• Henrik __, author of A Doll's House
• Henrik who wrote 'Peer Gynt'
• Norwegian writer
• Norwegian playwright, d. 1906
• "A Doll's House" author
• Is Ben a playwright?
• Author of 17 and (with model) of 'The Railway Children's Return'?
• Author of 'Peer Gynt'
• Peer Gynt playwright
• His supporters may believe in ghosts