David Sedaris tells a story from his boyhood, when a voice inside his head commanded him to lick every light switch and tap his forehead with his heel. It's from his book Naked.

On October 13, 2002, David MacLean woke up in India with no memory of who he was or how he got there. He had no choice but to let the people who recognized him—and even strangers—fill in his identity.

Back in 2004, a reporter named David Holthouse published a remarkable story in the weekly paper he worked for, Westword. It's about something he waited his entire life to do...since childhood.

Ira and the radio show staff get their results on the psychopath test from Dr. David Bernstein, of Forensic Consultants, LLC., who administered the test to them.

Story of a romance that began in a mental hospital. Sometimes, the line between crazy and not crazy is blurry; certain behavior could mean either thing.

Host Ira Glass talks about the surprising way apologies tend to play out in couples when one person has cheated on the other, based on stories his mother, Dr. Shirley Glass, told in her book Not Just Friends. And contributing editor Sarah Vowell tells us about the time she couldn't stop apologizing.

Dr Patricia Deegan hears voices in her head. She's a psychologist and she believes that the only way mental health workers can really understand what their patients go through is if they hear voices themselves.

Ira explains that when the radio staff decided to take a test that reveals who is a psychopath, very quickly everyone came to believe that the highest score would go to either Robyn, Jane, or him.

Kristen Finch was a speech therapist who sometimes worked with kids with Asperger Syndrome, symptoms of which include emotional distance, inflexibility and missing social cues. Kristin and her co-workers often joked that all their husbands had Asperger's, since the symptoms overlap with stereotypically male personality traits.

Host Ira Glass plays tape of two women who ended up as frenemies.They kept trying to be friends, but couldn't help themselves from fighting. Ira then speaks with psychologist Julianne Holt-Lunstad who has run scientific studies to answer the question: Why don't we simply end these troubling kinds of friendships? Holt-Lunstad's research also shows that these relationships are much more common than you might think.

A husband and wife face a decision about their autistic son's future, and whether he should continue to live with their family. 

Photographer Joel Meyerowitz decided to go on a last big trip with his father Hy, who has Alzheimer's. Joel also brought his own son.

What happens when a dealer of delight gets depressed? Podcast host Tracy Clayton talks to Bim Adewunmi about the road back. (17 minutes)

From London, TAL contributor Jon Ronson tells the story of a man who has spent more than a decade trying to convince doctors that he's not mentally ill. But the more he argues his case, the less they believe him.

Photographer Joel Meyerowitz decided to go on a last big trip with his father, Hy, who has Alzheimer's. Joel also brought his own son.