20/20 brings you hard-hitting investigative reports, news-maker interviews and compelling human interest and feature stories.
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | September 1999 | September 2025 | 80 |
| Season 1 | June 1978 | March 1979 | 11 |
| Season 2 | 0 | ||
| Season 3 | 0 | ||
| Season 4 | 0 | ||
| Season 5 | 0 | ||
| Season 6 | April 1986 | June 1986 | 2 |
| Season 7 | September 1986 | 1 | |
| Season 8 | 0 | ||
| Season 9 | 0 | ||
| Season 10 | 0 | ||
| Season 11 | 0 | ||
| Season 12 | 0 | ||
| Season 13 | November 1991 | 1 | |
| Season 14 | 0 | ||
| Season 15 | November 1993 | 1 | |
| Season 19 | June 1996 | 1 | |
| Season 21 | September 1997 | May 1998 | 2 |
| Season 25 | May 2003 | February 2004 | 3 |
| Season 26 | November 2003 | November 2004 | 5 |
| Season 27 | September 2005 | September 2006 | 3 |
| Season 30 | February 2009 | 1 | |
| Season 31 | September 2010 | July 2011 | 6 |
| Season 32 | April 2010 | 35 | |
| Season 33 | 43 | ||
| Season 34 | December 2011 | 69 | |
| Season 35 | April 2012 | December 2012 | 41 |
| Season 36 | February 2012 | December 2013 | 59 |
| Season 37 | January 2014 | September 2014 | 46 |
| Season 38 | March 2013 | September 2015 | 56 |
| Season 39 | September 2015 | July 2016 | 51 |
| Season 40 | September 2016 | November 2017 | 65 |
| Season 41 | December 2017 | September 2018 | 34 |
| Season 42 | September 2018 | September 2019 | 44 |
| Season 43 | September 2019 | September 2020 | 34 |
| Season 44 | October 2020 | October 2021 | 35 |
| Season 45 | October 2021 | September 2022 | 26 |
| Season 46 | September 2022 | September 2023 | 38 |
| Season 47 | September 2023 | September 2024 | 34 |
| Season 48 | September 2024 | September 2025 | 35 |
| Season 49 | September 2025 | November 2025 | 7 |
| Unassigned Episodes | 6 |
| Season | From | To | Episodes |
|---|---|---|---|
| Specials | 0 | ||
| Unassigned Episodes | 875 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 875 |
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Barbara Walters | 2 | 11/22/1991 | |
| Hugh Downs | 1 | 11/22/1991 |
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Patricia Dauer | 1 | 08/30/2006 |
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Rudy Bednar | 1 | 08/30/2006 | |
| George Paul | 1 | 08/30/2006 |
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