THE MINDY PROJECT: Amy (guest star Sarah Burns) tells the truth to Danny and Mindy in the episode, "You've Got Sext." (Beth Dubber/FOX)

The years 1897 to 1940 are chronicled in the latest installment of “The African Americans: Many Rivers to Cross” (PBS at 8 p.m.). The migration of African Americans from the South to the North and West, the Harlem Renaissance of the 1920s and racial violence are recalled, along with leaders such as Ida B. Wells, W.E.B. Du Bois, Booker T. Washington and Marcus Garvey.

Caleb finds a close relative who may be able to give more insight into the mystery of Ravenswood on “Ravenswood” (ABC Family at 8). He finds it difficult to talk to Hanna about his recent discoveries, while Olivia and Miranda unearth a link between their families that may prove to be critical.

A closed hit-and-run murder case is reexamined on “NCIS” (CBS at 8) when a former FBI agent tells Gibbs that her client’s confidential alibi is solid. Meanwhile, McGee become suspicious of Tony’s odd behavior.

The roommates embark on a series of adventures on “New Girl” (Fox at 9), after a number of Chinese takeout menus are left at their front door.

Just as Castiel is employed and back to enjoying life as a human, he learns about a number of local disappearances on “Supernatural” (CW at 9). He asks Dean to help him investigate the mystery and Crowley trades her help deciphering a tablet for one phone call to hell.

Mindy reveals her crush to Danny but he thinks she’s talking about him instead of her real crush, a lawyer named Cliff, on “The Mindy Project” (Fox at 9:30). Meanwhile, Morgan and Peter answer a text from Cliff on Mindy’s phone and start a conversation they may not be able to finish.

ABC counts down the top political missteps in recent memory on “Scandal for Real: The Top 10 Political Scandals of the Century” (10). D.C.-based shenanigans, prostitution rings, affairs, leaks and more are highlighted.

Actor Michael J. Fox comes to “The Late Show With David Letterman” (CBS at 11:35), along with a performance from pop sensation Lorde.

TV host Matt Lauer and comedian Carrot Top join “The Tonight Show With Jay Leno” (NBC at 11:35), with musical guest Cults.

Comedian Robin Williams is on “Jimmy Kimmel Live” (ABC at 11:35), with a musical performance from the Killers.

— Rachel Lubitz