If you like Call of Cthulhu try picking up a copy of Pagan Publishing's excellent campaign sourcebook "Delta Green".
The PCs are part of an X-Files style conspiracy of agents hidden in secret cells throughout the nation. They alone know (some of) the truth about the Mythos, and use their status as Federal agents (of many types, from Postal Inspectors, to FBI agents to CDC investigators, etc etc) to insinuate themselves into Mythos-related crimes and try to save humanity.
All the while they're being threatened by groups (Mythos and otherwise) that don't want them to uncover the Truth.
It's a great campaign setting with TONS of cool source material. The Delta Green and "Delta Green: Countdown" sourcebooks are each chock full of 400+ pages of yummy protoplasmic awefulness. Really, they're some of the best CoC books ever made. Heck, if you wanted to, you could adapt it to Spycraft...
The PCs are part of an X-Files style conspiracy of agents hidden in secret cells throughout the nation. They alone know (some of) the truth about the Mythos, and use their status as Federal agents (of many types, from Postal Inspectors, to FBI agents to CDC investigators, etc etc) to insinuate themselves into Mythos-related crimes and try to save humanity.
All the while they're being threatened by groups (Mythos and otherwise) that don't want them to uncover the Truth.
It's a great campaign setting with TONS of cool source material. The Delta Green and "Delta Green: Countdown" sourcebooks are each chock full of 400+ pages of yummy protoplasmic awefulness. Really, they're some of the best CoC books ever made. Heck, if you wanted to, you could adapt it to Spycraft...