Serial Koenig.

Radio Ira from This American Life has announced what sounds like it could be a gamechanger:

"I have exciting news today. We’re starting a new show! We’ve never done this before. It’s coming out in the fall. It’s called Serial and it’ll be a weekly podcast, not a radio show at all. The main way it’s different from This American Life is that instead of bringing you a different theme each week, every episode of Serial will bring you back not just to the same theme but to the same story, to bring you the next chapter. We’re starting with a crime story, that’ll run for about a dozen episodes. Our hope is that it’ll play like a great HBO or Netflix series, where you get caught up with the characters and the thing unfolds week after week, but with a true story, and no pictures. Like House of Cards, but you can enjoy it while you’re driving."

Sounds like its going to be fact rather than fiction too and presumably they're in the unknown themselves as to whether a given real life crime story can sustain itself over twelve weeks in this intensive manner. Perhaps it'll appropriate the structure of something like Law & Order but over the long form format of Murder One, but in real life, each hour covering a different aspect of the story.