"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".
Michael Connelly has written more than three novels.
This statement is correct.  The excerpt says that "Bosch" is based on three OF Michael Connelly's novels, which anyone fluent in English would recognize means he's written more than three.  That makes the statement correct.  The agent doesn't understand this nuance of English, I don't think.