Tunguska, Roswell, the Bermuda Triangle, the Mary Celeste... For hundreds of years, the danger posed by colliding worlds has been ignored as a crackpot theory, until now, and now it's too late. Maelstrom contains three novellas set in the Colliding Worlds universe (Collision, Impact and the conclusion, Maelstrom). Collision was commissioned by Vanquish Motion Pictures for possible development in film or on television.