18/12/2014 06:54 GMT | Updated 18/12/2014 06:59 GMT

The Final Episode Of 'Serial', According To Funny Or Die

It's the podcast that's gripped the nation. And elsewhere.

But now 'Serial' is reaching its climax. Today, in fact.

So who did it?

Allow Funny Or Die - and Michaela Watkins as Sarah Koenig - to explain.