Mac B., kid spy

"The Queen of England calls on her trusty spy, Mac B., once again. This time, Mac must navigate secret tunnels beneath the Berlin Wall in order to retrieve cheat codes from a Soviet scientist. Floppy disk in hand, our hero finds himself trapped in East Germany, stuck between the wall and the Stasi. How will he escape? Well it is 1989, and walls do fall down"--From the publisher's web site.

"England is in trouble! A priceless violin has been stolen, and there's only one person who can help: kid spy, Mac B. Mac's adventure takes him on a top-secret museum night watch and face-to-face with a mummy, zip-lining in Italy with his trusty corgi sidekick, and finally, 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?"--Provided by the publisher.

"The Queen needs Mac to crack the code and save the Video Game World Championships"--Back cover.

There is a legend that if the ravens at the Tower of London ever leave then Britain will fall, so when somebody steals the birds, the Queen calls for Mac B. to find the thief and retrieve them--a mission that takes him to Iceland, where he encounters secret submarines, hungry polar bears, and his arch-nemesis from the KGB.

In 1989 someone is threatening to steal the crown jewels, so the Queen of England summons Mac B. to England to protect them--and when they are stolen from a locked dungeon cell, where Mac and Holcroft, one of the warders, are supposed to be guarding them, it is up to Mac to figure out how they were stolen, and whether the thief is the descendant of an Irish soldier-of-fortune who tried to steal them in 1671, or someone else entirely.

One day, Mac (smartest boy in his class in a small town in California) receives a telephone call from the Queen of England, recruiting him to find the crown jewels (well, actually just the Coronation Spoon) and so Mac embarks on his first adventure as a secret agent--with the assurance that the Queen will give him a note excusing him from school.