Mystery of the Christmas Spy by Paul Moxham
In this story the children and their friend Will are vacationing in Scotland with their grandparents. Amy answers the phone and before Murphy can even talk to her there is a sound of breaking glass and the mystery starts.... They are trying to find two scientists who have a blueprint for a machine. So much action and adventure in this book that I found interesting. Love hearing of the characters from this series as their quests go on. Descriptions are so detailed, I feel as if I am right there along with them. Such a fun adventure for all ages to enjoy. ( )