When Cam's grandparents are robbed on their way to her parents' surprise birthday party, Cam uses her photographic memory to solve the mystery.

Geronimo is invited by his friend Creepella von Cacklefur to her family's spooky castle, and he is surrounded by the gloom of the castle as well as by Creepella's creepy family!

"The Queen of England calls on Mac B. once again! This time, Mac must crack a secret code that has been recovered from a double agent. A series of clues leads Mac to France, and then to Japan, where he comes face-to-face with his arch-nemesis, the KGB man... and the world headquarters of Nintendo! Is the KGB Man secretly behind all of this? And are Mac's video game skills good enough to facedown his enemy at the Video Game World Championships?"--Provided...

England is in trouble! A priceless violin has been stolen, and there's only one person who can help: Mac B., kid spy. Mac's adventure takes him on a top-secret museum night watch, zip-lining in Italy with his trusty corgi sidekick, and on an undercover mission in the heart of enemy territory. But when he ends up as a captured prisoner, is the mission lost for good?