D20 modern but the real key is to have very dedicated role players who make flawed and eccentric but believable characters and a DM willing and capable of writing and directing a mystery adventure without the players getting lost or going completely off the rails.

Basically getting it right is a perfect storm of writing and acting and there was no what they would get lightening to strike twice with a second season.

Something like this would be so freaking cool

>>44637050
Simple. Start it out with everything very normal and gritty
>use some mundane rpg system (no magic i mean)
>Players are cops/reporters/feds/etc... chasing crazy serial killer.
>Shit is fucked up.
>There are references to a wider and wider conspiracy protecting killer.
>arc words happen.
>keep up for roughly 3 sessions
>end of third session is showdown with killer
>why are there 2 moons?
>was that lake there before?
>Gendo fingers
>this is where the Trail of Cthulhu Character sheets are handed out
> Real campaign begins.

>>44637050
CoC.
Ahahhaaha no, just kidding.

InSpectres hack.

>>44637050
World of Darkness: God Machine Chronicles. The pamphlet for that is all you need.

>>44637183
D20modern is absolutely terrible for this.

>>44639613
>>44640493
Please elaborate?

>>44637183
>D20 modern
NO! BAD DOG! STOP PISSING IN THE FRUIT PUNCH!

>>44640918
>>44640493
C'mon, d20 Modern isn't that bad

>>44640806
I've never played Call of Cthulhu so I can't say whether or not there's a good modern supplement for it, but I was in a God Machine Chronicles game that played like True Detective. The way God Machine Chronicles handles character sanity is pretty fun. The rules are also pretty easy to learn.

I forget to mention this earlier, but alternatively you could use Gumshoe, since, you know, Gumshoe is actually made specifically for playing detectives.

>>44641540
How does the God Machine Chronicles work?

>>44642112
Same as any other WoD game, but with some trimmed down rules I guess? You can read the pdf here, it's not that long: http://www.drivethrurpg.com/product/114078/World-of-Darkness-GodMachine-Rules-Update

>>44642261
Cool, thanks heaps

>>44641236

It is that bad, stop trying to lie to everyone.

It is not nice.