Shermer and Klein discuss: sex therapist and the reasons people seek therapy • self-help sex books • sexual orientation • asexuality • sex abuse • infidelity • monogamy • polyamory • trans • homosexuality • sex education • the case against the sexual revolution • sex addiction • pornography • the anti-pornography movement • prostitution • obscenity and censorship • pedophilia.

Marty Klein has been a Licensed Marriage & Family Therapist and a Certified Sex Therapist in Palo Alto, California for 42 years — over 40,000 sessions with individuals and couples. Marty is the author of seven books on sexuality, including Sexual Intelligence: What We Really Want from Sex and How to Get it; His Porn, Her Pain: Confronting America's PornPanic with Honest Talk about Sex; Beyond Orgasm: Dare to be Honest About the Sex you Really Want; Ask Me Anything: Dr. Klein Answers the Sex Questions You'd Love to Ask; and America's War on Sex: The Attack on Law, Lust and Liberty. Marty is an outspoken critic of many popular and clinical ideas about sexuality and emotional health. Wikipedia cites him as the foremost critic of the concept of sex addiction. He is a founding editor of the Journal of Porn Studies. And each year Marty gives expert testimony in various state and federal courts. A former instructor at Stanford Medical School, Marty's humor, insights, and down-to-earth approach are regularly featured in the national media, such as the New York Times, the New Yorker, Nightline, NPR, and the Huffington Post.