There is a little irony that an author known for terse, unfettered sentences is the subject of a filmmaker known for his expansiveness. Ken Burns’ “Hemingway” (PBS, 8 p.m., check local listings) isn’t as lengthy as some of his other epics, but six hours in three parts provides a pretty detailed look at the writer who defined a kind of machismo even as his personal life suffered. Burns and co-director Lynn Novick have assembled an array of authors who praise his work; the author’s voice is provided by Jeff Daniels, possibly for having similarly Midwestern roots. But it’s hard to hear him and not remember his Will McAvoy character from “The Newsroom.” Like all of Burns’ other films, though, it’s an absorbing history lesson.  

March Madness comes to an end, five days into April with Baylor vs. Gonzaga (CBS, 9:20 p.m.) for the NCAA championships. 

The succinct Irish detective tale “Bloodlands” (Acorn TV, streaming) has its series finale.

It’s accompanied by the seventh season start of the New Zealand detective series “The Brokenwood Mysteries” (AcornTV, streaming).

The family sitcom “Family Reunion” (Netflix, streaming) with Tia Mowry-Hardrict and Loretta Devine, returns for a third season. 

“American Idol” (ABC, 8 p.m.) continues its all star duets while “The Voice” (NBC, 8 p.m.) continues its battle rounds. 

The news special “CNN Special Report: The Truth About Vaccines” (CNN, 9 p.m.).