names Raley and Ochoa co-lead detectives of the 20th Detective Squad. Dr. Lauren Parry is a medical examiner with the Office of Chief Medical Examiner of the City of New York and one of Det. Heat's closest friends, based on Dr. Lanie Parish. Margaret Rook is Jameson Rook's mother, based on Richard Castle's own mother Martha Rodgers. Margaret is a 60-something-year-old Tony Award-winning Broadway diva. Detective Randall "Randy" Feller is a member of the NYPD Taxi Squad in Heat Rises. He transferred to Det. Heat's homicide team before the events of Frozen Heat. Detective Daniel "Dan" Rhymer is a former military policeman from the Carolinas, nicknamed "Opie", who now works in the burglary division of the 20th Precinct. Det. Heat often borrows him for high-profile investigations to the point where he eventually became a full-time member of the squad. Detective Inez Aguinaldo, a member of the Southampton Police Department who assisted Det. Heat during the events of Raging Heat. She transferred to the NYPD's 20th Precinct in Driving Heat after Heat was promoted to captain. Detective Benigno DeJesus is the lead member of the 20th Precinct's Evidence Collection Team and a valued colleague of Det. Heat. Zach Hamner, aka "the Hammer", is the Senior Administrative Aide to the Deputy Commissioner of Legal Matters. A powerful member of the NYPD, Hamner felt personally snubbed by Det. Heat when she turned down the promotion to lieutenant. He has since become 1PP's point man when it comes to Capt. Heat and her precinct. In Heat Storm, he strongly urges Capt. Heat to accept Presidential candidate Lindsy Gardner's offer to become Director of Homeland Security in anticipation of all the federal assistance she could provide the NYPD with in that position. Captain Wallace "Wally" Irons, first introduced in Heat Rises is an administrator and bureaucrat who took command of the 20th Precinct after the death of Captain Montrose. He was not very well-liked or respected by Det. Heat, especially after he began sleeping with precinct Detective Sharon Hinesburg, and is constantly about looking good to the public and the NYPD brass. He was killed in an explosion in Raging Heat, prompting Heat to succeed him as precinct commander. Detectives Malcolm and Reynolds, first introduced in Naked Heat . On loan from Burglary Division, they are considered to be as formidable a team as Raley and Ochoa. Their names are taken from the character played