As season one of "Serial," the most downloaded podcast in the world, comes to a close next week, there are still so many questions that have not been answered by investigative journalist and host Sarah Koenig.

She was a guest on "The Colbert Report" Wednesday night, and, as you could have guessed, Koenig did not hint at the how the story of Adnan Syad's guilt/innosence will conclude next Thursday. Colbert had high praise for Koenig, calling her "the world's first superstar podcaster" and his favorite guest ever.

Although she kept her lips sealed regarding next week's finale, Colbert was able to get some great information out of Koenig.

When asked by Colbert "did you always want to do a true crime reporting podcast that people listen to on a tread mill?" Koenig explained that the idea for the show did not originally revolve around murder.

"It wasn't specifically that we wanted to do a show about murder," Koenig said. "We wanted to do a serialized documentary. This happened to be a story I was already interested in, that I had just started working on when we got the idea to do 'Serial,' so I was like 'I got a story, let's do this one. It seems to have a lot going on and seemed to be enough to sustain it over time."

One of the few serious questions Colbert asked was one that many people have criticized Koenig about. Is she trying to help Syad get out of jail?

"I am not advocating for this guy," Koenig said when asked if she was an advocate journalist. "What grabbed me about this story is a friend of his family came to me and said 'I believe this guy is innocent. This trial was crazy. This investigation has holes in it... can you take a look?' And so I started looking into it and I just became so confused, so quickly... so I just kept going from there."