Together, they began combing through the art room for more clues. Sherlock examined the chalkboard closely, where several incomplete drawings of animals and landscapes were sketched.
“What’s this?” Dea asked, pointing to a spot on the chalkboard. A small piece of chalk was missing, the absence too perfect to be accidental. Sherlock frowned.
“It’s a message,” Sherlock muttered. “But not one anyone would notice at first glance. Look here,” he pointed to the faint impressions where the missing chalk had once been, “this was done deliberately. Someone took the chalk after writing something.”
