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Smart answer:
After reading 1663 websites, we found 3 different results for "Who wrote A Monster Calls"
Patrick Ness
Patrick Ness won the 2011 Carnegie medal for book 3, Monsters of Men, and also wrote A Monster Calls, completed from an idea left by the late Siobhan Dowd.
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Patrick Ness FRSL
Patrick Ness FRSL is best known for Patrick Ness FRSL's books for young adults, including the Chaos Walking trilogy and A Monster Calls.
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Siobhan Dowd
A Monster Calls by Patrick Ness and Siobhan Dowd; illustration by Jim Kay Invisible Tentacle (best natively digital fiction) 2015
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