Based on the crime novels written by J.K. Rowling, "C.B. Strike" (formerly known as "Cormoran Strike") centers on Strike (Burke), a war veteran turned private detective operating out of a tiny office in London's Denmark Street. Though he's wounded both physically and psychologically, Strike's unique insight and his background as an SIB Investigator prove crucial in solving three complex cases which have eluded the police. Grainger will play Robin Venetia Ellacott, Strike's assistant and secretary.