Rahasia is an adventure module, self-published by DayStar West Media in 1980 and published by TSR, Inc. in 1983 and 1984, for the Basic Set rules of the Dungeons & Dragons fantasy role-playing game. Its product designation is TSR 9115. It was designed by Tracy and Laura Hickman, and features artwork by Jeff Easley and Timothy Truman. Source: Wikipedia (en)