Premise: "Bosch" is an American police procedural television series produced by Amazon Studios. It stars Titus Welliver as Los Angeles Police detective Harry Bosch. The show, developed for Amazon by Eric Overmyer, takes its inspiration from three of Michael Connelly’s novels: "City of Bones", "Echo Park", and "The Concrete Blonde".
Hypothesis: There are enough books  with Harry Bosch to keep the tv series alive for a long to come.