There's a Hole in my Mind

From the introduction: “There’s a Hole in My Mind” is an adventure for D&D 5e, suitable for a party of mid- to high-level characters. This adventure, in essence, is a mind flayer / fantasy version of the classic “alien abduction” phenomenon of popular culture. The adventure conceptually was inspired by “Schisms”, the 6th season, 131st episode of the American science fiction television series Star Trek: The Next Generation.