30 for 30: When the Garden Was Eden (9pm, ESPN) - The latest in this excellent sports documentary series revisits the New York Knicks’ glory years of 1970-73, which featured three NBA Finals and two titles. Director Michael Rapaport features a unique lineup of stars from Walt “Clyde” Frazier and Earl “The Pearl” Monroe to Bill Bradley and Phil Jackson.
Also on tonight . . .
The Flash (8pm, The CW) - Barry and the team go after the Mist, who possesses toxic gas powers. They also reflect on the night Caitlin’s fiancé died.
Finding Your Roots (8pm, UNC-TV) - Historian Henry Louis Gates Jr. helps chefs Tom Colicchio, Ming Tsai and Aaron Sanchez learn about their family histories. Colicchio’s includes an ancestor who crossed the Atlantic many times to bring family members to the U.S. and Sanchez’s ancestors include Spaniards, Africans and Native Americans.
Marry Me (9pm, NBC) - Jake moves into Annie’s apartment, but Annie feels the stress of sharing her space with someone.
Sons of Anarchy (10pm, FX) - SAMCRO forges an unlikely partnership to undermine a powerful enemy. Which enemy? Take your pick.
Real Sports with Bryant Gumbel (10pm, HBO) - Segments include a look at research linking head trauma to violent behavior and a report on salaries in minor-league baseball.