Premise: The Underground Man (1997) is a novel by Mick Jackson. Critically acclaimed, it was shortlisted for the Booker Prize for that year. It shows the life of an eccentric and reclusive Victorian Duke, loosely modelled on William Cavendish-Scott-Bentinck, 5th Duke of Portland. His latest scheme involves building a set of tunnels beneath his estate.
Hypothesis: Mick Jackson is a duke