- "At any moment the fight against crime can turn into a life-or-death struggle!"
- — Tagline, from the front cover
The Emperor's Shield is the 119th book in the The Hardy Boys Casefiles series.
Frank and Joe have come to Germany to assist archaeologist Dr. John Maxwell in his search for a legendary jewel-encrusted shield. The priceless artifact is rumored to be buried in the lost ruins of an ancient Roman fortress. But the boys discover more than the shield is missing: Maxwell himself has vanished without a trace!
Hunting for both Maxwell and the shield, the Hardys make some powerful, ruthless enemies. From vicious attack dogs to armor-clad thugs, they face a new fight at every turn. But as they descend into a labyrinth of lies, Frank and Joe are determined to unearth the truth ... no matter how deep, dark, and deadly it is!