THE SCHEME (2020) 9 p.m. on HBO. In 2017, the N.B.A. scout Christian Dawkins — along with several assistant coaches and Adidas executives — was arrested by the F.B.I., after a two-year investigation into a collegiate basketball scandal. In 2019, Dawkins was found by a New York jury to be guilty of bribery and conspiracy to commit bribery. This feature details the scandal and the investigation, including interviews with Dawkins, his parents, his lawyer and two journalists.

THE POLIO CRUSADE: AMERICAN EXPERIENCE 9 p.m. on PBS (check local listings.) Partly based on the book “Polio: An American Story” by David Oshinsky, this feature documents the state of the nation during the polio outbreak of the 1940s-50s. Easily transmissible and potentially resulting in paralysis or death, polio and the threat of its contagion gripped the country until the Salk vaccines were tested in 1954. This program includes interviews with people who had polio and the only scientist still alive who worked on the vaccine.