The Great Trap

It is 1927, and a letter invites Investigators to the home of Professor Adhemar Osterman.  The letter is dated almost thirty years in the past, and bears each of the Investigators’ signatures.  They do not remember signing the letter, but they do remember the strange dreams that follow its receipt.  Dreams of signing a letter in the company of a man once a friend, now a stranger; of running from the shrill whistling of an invisible assailant; and of walking towards the trumpet sounds of a dying alien race.  Visions of what was, what is, and what may yet come to pass.

The Great Trap is the third in a short series of stand-alone modules for Call of Cthulhu 7th Edition, examining human concepts and experiences through the unknowable and alien Cthulhu Mythos. The Investigation features the Outer God, Yog-Sothoth, and explores themes of regret, obsession, and revenge. The scenario challenges Investigators to question who they are, what they might do, and how the answers to those questions change if only history plays out a little differently.  This scenario is also an homage to Dungeons & Dragons scenarios of yesteryear, and The Shadow out of Time by H.P. Lovecraft.

The Great Trap contains 66 pages in total, including: a 35-page scenario, 18 pages of handouts, 4 pages of NPCs and creatures, and 9 pages of pre-generated characters and background.

You can also watch a playthrough of this scenario on the Heinrich Moore Presents YouTube channel.