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- Season 56 overviewFeb 5-Sep 17, 201735 episodesSeason 56 episodes53. S49 E53 Sep 17, 2017
- Heroin addiction in the United States; the life and work of author John le Carré.
- 52. S49 E52 Sep 10, 2017
- Former White House strategist Stephen K. Bannon; new Arctic resources due to climate change.
- 51. S49 E51 Sep 3, 2017
- Flood insurance claims after Hurricane Sandy; cheating in pro cycling; the set of "Sesame Street."
- 50. S49 E50 Aug 27, 2017
- Michael Bloomberg; an unconventional jail management style; CrossFit founder Greg Glassman.
- 49. S49 E49 Aug 20, 2017
- Preventing terrorist attacks; drones in battle; Saroo Brierley, inspiration for the film "Lion."
- 48. S49 E48 Aug 13, 2017
- Loopholes in the H-1B visa program; the Remington 700 hunting rifle; timber racing.
- Parents of children killed in the Newtown, Conn., shooting; architect Peter Marino.
- 46. S49 E46 Jul 30, 2017
- A man who was tortured and held at Guantanamo Bay prison for close to 14 years tells his story.
- 45. Tawdry Tales, The Brothers Rosenberg Jul 23, 2017
- Former Gov. Bob McDonnell's corruption case; the sons of infamous spies Julius and Ethel Rosenberg.
- 44. S49 E44 Jul 16, 2017
- The controversial policy the U.S. government follows when an American is held for ransom.
- 43. S49 E43 Jul 9, 2017
- Scientists study volunteers with a genetic mutation that causes early-onset Alzheimer's.
- 42. S49 E42 Jul 2, 2017
- A young man's reasons for attempting to join ISIS; circus lions are brought to a peaceful sanctuary.
- 41. S49 E41 Jun 25, 2017
- Ways artificial intelligence is changing the world; professional baseball player Shohei Otani.
- 40. S49 E40 Jun 18, 2017
- The first responders who rescue civilians in Syria; countries selling passports and citizenship.
- 39. S49 E39 Jun 11, 2017
- A defector from North Korea shares thoughts on Kim Jong Un; cellphone addiction; Bruno Mars.
- 38. S49 E38 Jun 4, 2017
- A look into the mysterious attacks on the lives of Russian opposition activists.
- 37. S49 E37 May 28, 2017
- A 99-year-old survivor of the Bataan Death March walks the trail annually.
- 36. S49 E36 May 21, 2017
- A massive corruption scandal involving Brazilian politicians; jailhouse informants in Orange County.
- 35. S49 E35 May 21, 2017
- A report on sanctuary cities; controversial sheriff; a provocative Chinese artist draws harassment.
- 34. S49 E34 May 14, 2017
- The firing of FBI director James Comey; documents seized in the raid that killed Osama bin Laden.
- 33. S49 E33 May 7, 2017
- The deportation of a father and business owner; prosecutor from the Nuremberg trials; Chicago Cubs.
- 32. S49 E32 Apr 30, 2017
- The Supreme Court's ruling in former Gov. Bob McDonnell's public corruption case; Norman Seeff.
- 31. S49 E31 Apr 23, 2017
- Former New York Mayor Michael Bloomberg; Judge Alex Kozinski; timber racing.
- 30. S49 E30 Apr 16, 2017
- Parents of children massacred in Newtown, Conn., work to prevent another shooting.
- 29. S49 E29 Apr 9, 2017
- Habit-forming smartphone apps and content; Chobani CEO Hamdi Ulukaya; baseball player Shohei Otani.
- 28. S49 E28 Apr 2, 2017
- Betty Shelby, the Tulsa police officer charged with manslaughter; architect Peter Marino.
- 27. S49 E27 Mar 26, 2017
- Preventing terrorist attacks; "fake news"; a chess program lifts the hopes of a community.
- 26. S49 E26 Mar 19, 2017
- Loopholes in the H-1B visa program; food famine in South Sudan; the set of "Sesame Street."
- 25. S49 E25 Mar 12, 2017
- Russian opposition activist Vladimir Kara-Murza; former Guantanamo Bay prisoner Mohamedou Slahi.
- 24. S49 E24 Mar 5, 2017
- French presidential candidate Marine Le Pen; new information in the sinking of the El Faro.