User summary: De Profundis is a role-playing game set in the world of Cthulhu mythos created by H.P. Lovecraft. The system is loosely based on a psychological technique called psychodrama - the game does not require a traditional game master, as all the action is presented in letters written in-character by the players. The second edition has been expanded by rules adapting De Profundis for play by email and several articles about improving game flow and adapting the rules for other settings.