For gold
The man was searching for gold and he found it in Merlin's eyes. At first Merlin had resisted the flames, but as they sank further into his mind, his body took over, his instincts took hold. A single flash was all it took to quell the flames. The man didn't need a confession, the truth was obvious. There was no denying it, Merlin had magic. He reported his findings to Arthur, who sighed. He hadn't wanted his fears to be true… Arthur now had to decide what to do with the information… He knew that his father's kingdom came first.