1
The resulting duology is an enthralling read that's pressingly relevant in 2018.
2
The wave will crest next year when Peter Jackson's long-awaited Hobbit duology arrives to captivate gore-drunk earthlings in need of less nihilism.
3
Adrian Tchaikovsky follows his successful Children of Time duology with the standalone The Doors of Eden (Tor, £18.99).
4
Yes, the BBC America show premiering tonight is based on a book duology by Adams, who also created the Hitchhiker's Guide to the Galaxy series.