From the back cover: A Thrilling 1950's MSPE GM Adventure! It’s 1952 and something big is going on in San Francisco. There are rumors that a secret group of communists are trying to steal America’s nuclear secrets, but there seems to be more to this situation than meets the eye. How is Chinatown’s Triad gangleader involved in this affair, and what does the Brotherhood and the mysterious Pentagram group have to do with this? Everyone in San Francisco is at risk and something is happening on Treasure Island that may be connected. Can your team crack the case and save the city, or is it already too late? The First New MSPE Adventure in Over 20 Years!