Nanny X Rosenberg, Madelyn Popularity → Current 28 Peak 38 Niche 52 Ten-year-old Alison and eight-year-old Jake discover that their nanny is working undercover to catch criminals. Holiday House 2014-08-31 106 pages
Nanny X returns Rosenberg, Madelyn Popularity → Current 25 Peak 35 Niche 48 Alison, Jake, and their undercover nanny are on the trail of an artist who is threatening the president and planning to destroy national treasures in Washington, D.C. Holiday House 2015 99 pages