Dirk Gently is a British comedy detective drama TV series based on characters from the Dirk Gently novels by Douglas Adams. The series was created by Howard Overman and stars Stephen Mangan as holistic detective Dirk Gently and Darren Boyd as his sidekick Richard MacDuff. Recurring actors include Helen Baxendale as MacDuff's girlfriend Susan Harmison, Jason Watkins as Dirk's nemesis DI Gilks and Lisa Jackson as Dirk's receptionist Janice Pearce. Unlike most detective series Dirk Gently features broadly comic touches and even some science fiction themes such as time travel and artificial intelligence.
Dirk Gently operates his Holistic Detective Agency based on the "fundamental interconnectedness of all things", which relies on random chance methods to uncover connections between seemingly-unrelated cases. He claims that he follows the principles of quantum mechanics, although the majority of his clients suspect he may be a conman he often produces surprising results. With the help of his assistant, Richard MacDuff, Dirk investigates a number of seemingly unrelated but interconnected cases.