NYPD Red 4 by James Patterson and Marshall Karp. Is Karp a shortened name? Did it used to be one of those super-long Eastern European ones like Karpeniskikisynsasneikity? I should check a reference book, but I won't.
The Plague of Thieves Affair by Marcia Muller and Bill Pronzini. Do Muller and Pronzini work in separate rooms or share an office. I'm guessing they have separate offices because I would be quickly distracted if someone else was there as I tried typing.
The Swans of Fifth Avenue by Melanie Benjamin. Benjamin wrote the popular book club book, The Aviator's Wife. Benjamin lives in Chicago. In Chicago the city? Or, in the Chicago area?