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A bank robber on an undercover mission. A teenage girl with the powers of a tiger. A vigilante seeking vengeance in Ciudad Juárez. All have secret identities — but not all of them chose those identities for themselves. Start a Life Partners free trial to watch our new video, A Night of Stories and Improv. (00:00:00) Prologue: Ira attempts to solve perhaps the most unsolvable mystery at the Trees of Mystery in California: Who is the voice of Paul Bunyan? (7 minutes) (00:07:23) Act One: If you ever think about assuming a secret identity, you may want to take a little time to consider the possible consequences. Jon Ronson tells the tale of a bank robber who absolutely does not take that advice. (22 minutes) (00:31:33) Act Two: Elna Baker shares a story about her teenage cousin, Navey Baker, who maintains a secret identity while being a public figure: she's the school mascot, a tiger, at her high school. (11 minutes) (00:41:28) Act Three: While we were putting together this week's show, we heard about a real-life Avenger with a secret identity in Ciudad Juarez, Mexico. Writer Yuri Herrera lived on the border for several years and spent a lot of time in Juarez. He went back there to see what effect this secret Avenger has had on the city. (13 minutes) Transcripts are available at thisamericanlife.org / This American Life privacy policy . / Learn more about sponsor message choices .