The Legend of Charlie's Gold

X marks the spot. At least in fiction. That's what ten-year old Colin Smout McManus always thought. But, when a mysterious package arrives at Edinburgh Academy from his archaeologist uncle, Smout finds himself embarking on a dangerous adventure throughout the historical streets of Edinburgh to find a lost pirate treasure. Smout and his group of ragtag friends must solve a series of strange clues and riddles to puzzle out the mysterious trail. But, they're not the only ones in search of the gold. Someone as ruthless as the pirates of old is hot on their heels. Will they find the treasure before he finds them?