Dirk Gently's Holistic Detective Agency is a novel by Douglas Adams, as well as the name of the detective agency featured in the Dirk Gently series. The main character of the story is Dirk Gently, a private detective[?] with unusual methods. It includes the unfinished portion of Coleridge's Kubla Khan.
... are
confined to several passages, viz., the merit of good
works and transubstantiation (iv. 2), purgatory
(iv. 9), and the worship of saints (i. 13, ii. 9, iii. ...