Merlin investigates a royal mystery at Stonehenge. A baron and his sons are found dead at Stonehenge. King Arthur's potential heirs start to mysteriously die. And only Merlin can prove that the murders are not the work of the plague, but something much more sinister.

SUMMARY: When Guenevere and the faithless knight Lancelot plan to annouce themselves as the rightful rulers of England during her birthday celebration, King Arthur and Merlin make their own plans for thwarting the two until murder enters the picture and they are forced to help the enemy. Original.

Merlin makes a great investigator – and it only looks like magic. Merlin is no magician, merely a scholar and advisor to King Arthur. But after the supposedly magical Stone of Bran is stolen – along with the legendary sword Excalibur – and one of Arthur's squires is brutally murdered during the theft, Merlin must use the power of reason to conjure up a miracle and catch a murderer.