Against the Thieves Guild, an adventure for 4th-level characters. The heroes must retrieve a magical lockbox secured in a vault secluded in a trap-laden dungeon. Sounds like a simple heist? But soon, the characters are embroiled in a centuries-old rivalry between master thieves. Assuming they survive the deathtraps, they still must deduce the secret of the enchanted lockbox! Against the Thieves Guild is an all-new 32-page softcover adventure, fully compatible with the fifth edition of the world's first fantasy role playing game. This adventure features numerous traps pulled from OAR #8 Grimtooth's Old School Traps, plus several new traps. That book is not required to use this adventure, which can be easily dropped into your own campaign setting.