- The title character gets his name from the 15th century Dutch painter Hieronymus Bosch
- The series was greenlit due to online audiences’ overwhelmingly positive online response to the Amazon pilot
- Author Michael Connelly is heavily involved in the show, and co-wrote the pilot with Eric Overmyer
- Connelly has said it what he saw behind Titus Welliver's eyes that convinced him that he was the one who would be able to embody Bosch
– CraveTV –*Based on total number of views.