This Mac B., Kid Spy Series 6 Books Set includes the following 1. Mac Undercover 9781338143591 2. The Impossible Crime 9781338143683 3. Top Secret Smackdown 9781338143713 4. Mac Cracks the Code 9781338594232 5. The Sound of Danger 9781338594263 6. Mac Saves the World 9781338742459