The Long Dark Tea-Time of the Soul

Contender for possibly the greatest book title of all time, The Long Dark Tea-Time of the Soul is the sequel to Dirk Gently's Holistic Detective Agency and is just as bizarre, wondrous and fascinatingly scientific, filled with humour and head-scratching moments from start to finish.

Released a year later in 1988, there are only two books in the Dirk Gently's series, Douglas Adams having perhaps learned from the Hitchhiker's series to keep it more consistent, cohesive and compact, or perhaps he just ran out of ideas/steam?

Incredibly inventive, this is worth a revisit at some point while listening to the Dark Side of the Moon, most probably.