There is a kickstarter now underway for a pack of system neutral horror scenarios. The scenarios are set in 1930s Drepresson America and are designed to be system neutral so you can use them in pretty much whatever system you're group is using. They're also original monsters, so you're players won't know what hit them.http://www.kickstarter.com/projects/159466030/no-security-horror-scenarios-in-the-great-depressi
I am a huge fan of their author. There are links to actual play playtest recordings of two of the scenarios on the kickstarter page. Give it a look and the APs a listen, I think you'll be impressed.