Bosch is an American police procedural web television series produced by Amazon Studios and Fabrik Entertainment. It stars Titus Welliver as Los Angeles Police detective Harry Bosch. The show was developed for Amazon by Eric Overmyer and the first season takes its inspiration from three of Michael Connelly's novels: "City of Bones", "Echo Park", and "The Concrete Blonde".

Can we draw the following conclusion?
Titus Welliver plays the main character of Bosch.
Yes