Ten years ago, a gripping audio series called Serial burst onto the scene to become the world’s first viral podcast. Thanks to its compassionate host and compelling murder mystery, Serial became a phenomenon that spawned one of the most popular audio genres on the planet, one with the power to hook listeners with no prior experience with the format. The best investigative podcasts are documentary-style series that deep dive on a subject over the course of a season, and are hosted by a narrator or narrators (often investigative journalists, though not always) who introduce the story and spend the rest of the episodes piecing together the clues and shedding new light on previously neglected evidence. Popular topics include crime, scandals, politics, and history, though anything that's a good story can get the investigative treatment, as this eclectic list suggests. There are countless investigative podcasts out there, with these 20 being a perfect introduction to the genre.

Think Twice: Michael Jackson
West Cork
Dead Eyes
Wind of Change
Donor 9623: Part One
Magnificent Jerk
The Debutante
The Girlfriends
S-Town
Exposed
I Was Never There
Bear Brook
Hunting Warhead
Articles of Interest
The Kids of Rutherford County
I Am Not Nicholas
Through The Cracks
Deepest Dive
Bag Man
The Greatest Menace