David Beckham, center, journeys into the Amazon rainforest with friends Derek White, left, and Anthony Mandler in a 90-minute Showtime documentary. (Freddie Claire/SHOWTIME)

“Greta Investigates: O.J. Simpson” (Fox News Channel at 7 p.m.) joins the onslaught of O.J. Simpson trial retrospectives this week. In a one-hour special, Van Susteren revisits her exclusive 2004 interview with Simpson and case analysis from key players in the arrest and subsequent trial of the former football star.

With a 3-1 lead, the Los Angeles Kings look to raise the Stanley Cup on their home ice against the New York Rangers in the 2014 Stanley Cup Final (NBC at 8).

RETURNING SHOW: The U.S. Capitol Building is featured on the Season 2 premiere of “Monumental Mysteries” (Travel at 9), an investigative series that has historian Don Wildman looking into the past of several massive buildings in the United States. In the opener, Wildman investigates a bomb explosion that took place in the Capitol in 1915 and the strange manifesto that came with it.

The 90-minute documentary, “David Beckham: Into the Unknown” (Showtime at 9), chronicles Beckham and his friends’ unforgettable journey deep into the heart of the Amazon rainforest in Brazil.

“Fashion Police” (E! at 9) recaps the week’s best and worst fashion with the help of guests NeNe Leakes of “Real Housewives of Atlanta” fame and Jenny Slate from “Obvious Child.”

A full hour of “Say Yes to the Dress: Atlanta” (TLC at 9) has a bride eager to find her very own dress that won’t be a hand-me-down or have to be shared, and a cancer survivor thrilled about planning her nuptials — but an opinionated mother-in-law stands in her way.

Pop star Katy Perry and country star Kacey Musgraves come together to collaborate for the first time on the 50th episode of “CMT Crossroads” (CMT at 10).

“Mountain Monsters” (Destination America at 10) investigates what central West Virginia locals call the Shadow Creature, an elusive beast that’s known as an expert predator entirely covered in a black exoskeleton.

“Real Time With Bill Maher” (HBO at 10) hosts a roundtable with the Environmental Protection Agency’s Gina McCarthy, comic Carol Leifer, security expert Richard Clarke, political commentator Krystal Ball and journalist Tom Rogan.

Comedian Dave Chappelle comes to “The Tonight Show Starring Jimmy Fallon” (NBC at 11:35), along with music from Body Count.

Actor Hugh Jackman and comedian Joe List are on the “Late Show With David Letterman” (CBS at 11:35), with musical guest Elvis Costello.

Television host Phil McGraw (Dr. Phil) and Sage Steele of “NBA Countdown” swing by “Jimmy Kimmel Live” (ABC at 11:35), with a musical performance from Mø.

Rachel Lubitz