The Tower Beyond Time by Ninja G

Shadowdark is a tabletop RPG and this is an adventure for that game.  It starts with a murder mystery which hooks players into a side quest about a magical tower which appears suddenly and then disappears for generations. A bunch of treasure hunters are scheming to find that legendary tower and loot it's treasures before it can vanish again. The players are pitted against some tough competition. Who will be an ally and who will be a deadly enemy? Can the players piece together the clues in time to get the treasure first?