Boy have WE got the thing for you, my friend.
Dark*Matter.
"What's that? Duck*Platter?"
No, friends, DARK*MATTER.
Step 1: Pick up the
Dark*Matter campaign setting book for 5$ on RPGNow. This method involves some conversion of NPCs, but it's rather easy to switch them out with pre-statted NPCs from the D20Modern book or from The Menace Manual and almost all creatures featured there-in are in the Menace Manual as well.
Alternately, wait for September and pick up
d20 Dark*Matter.
Either way, the core book will contain the info you need to start a new campaign AND at least one adventure (Exit 23). The Alternity book also contains (Raw Recruits), a second adventure.
Step 2: Pick up
The Killing Jar a full length adventure for D*M Alternity but, again, rather easily converted for 5$. Also available is
The Final Church a PDF-only Alternity resource (mostly fluff) on demon worshippers which includes a long and rather convoluted adventure.
Step 3: Stop by AlternityRPG.net to browse their
Adventures section. Order by # Of Downloads. You'll find several professional adventures for free in PDF including ... "Of Ghosts and Goblins", "A Head For Business", "London Calling", and "The Kindness Of Strangers". There are also fan-submitted selections.
Step 4: Stop on by 12toMidnight's
product page and check out some of their adventures. All are "modern horror" and all are set in Pinebox Texas, but they are rather easily adapted to Dark*Matter games by adding a "mission briefing" and moving them to various points around the country. Look for "Bloodlines", "Brainwashed", "Last Rites", and "Skinwalker". I, myself, haven't had a chance to run Bloodlines or Skinwalker as D*M adventures, but I have the other two and they worked out fine.
And, eventually, I'm putting together a website that, I hope, will have some additional things including adventures.
--fje