The Egyptian mega-temple at Karnak was once the political power base of the ancient pharaohs and the home to strange religious rituals; new discoveries of skeletons tell a story of jealousy, betrayal, and the rise of a new religion that changed Egypt.

The chefs get some gorgeous crustaceans and a fancy pasta in the first basket; making the most of an expensive mushroom in round two; one of the last two chefs runs into trouble while trying to make an apple dessert.

Bob Lee looks into the terrorist attack that may have targeted his Marine unit; Memphis helps on the ground in Germany.

One of the competition's most infamous veterans returns to shake up the game.

Current issues and news stories.

As Aly and Josh's surrogate goes into labor, they worry she'll have difficulty giving up the baby; Jarrel does a paternity test in Boston without telling Krystal; Brooke goes into labor three weeks early; Mars gives Doug an ultimatum.

Determined to prevent a murder, Laura teams up with Nico, a former cop, and they search for the serial killer's next victim. Can they save her, catch the killer and alter fate?

Since Kara has a tough time in arbitration with her wrongful termination claim, Mary Jane and Justin decide not to confess that they're seeing each other; Mary Jane becomes forced to lie.

Marine biologist Craig O'Connell tries to find out how close sharks really are to New York now that seals are back in New York Harbor, and shows what a future with great whites in New York will look like.

Matthew and Abbi get acquainted with the boldest and best creatures in the universe: pets. Plus, they take care of a pig, mini-horse and bearded dragon in a quest to find the best alternative pet.

Looking at the major political stories of the day and breaking campaign news.

Tonight's guests are TBA.

Tonight's guests are Jessica Biel, Matt Bomer, Kelsea Ballerini, Keith Sweat.

Tonight's guests are Charlie Rose, Jessica Williams, Max Brooks.

Long-running reality staple "Big Brother'' is so popular that the three episodes a week that usually air during its season aren't enough to satiate the show's devoted fans. They want more, which is where this late-night show fits into the equation. The program features a curated live feed from inside the house to give viewers a peek into the housemates' lives that they don't always get to see during the prime-time shows. Just don't expect anything too out-there; that is reserved for the subscription-based online feed.

The matches scheduled for tonight's card are as follows:

Ember Moon vs. Lei'D Tapa

The Velveteen Dream vs. Cezar Bononi

Main Event: Kassius Ohno vs. Hideo Itami

Tonight's guests are former Vice President Al Gore and actress Laura Linney; musical performance by Mr. Eazi.

This half-hour program provides viewers with in-depth reporting on one or more of the major stories in the news, with occasional segments on pop culture. Journalists Dan Harris, Juju Chang and Byron Pitts share hosting duties for this late-night program.

Jim Gaffigan and musical guest Fall Out Boy. Brad Wilk sits-in with the 8G Band.

Detective Garry McFadden finds it hard to separate out his personal feelings after a friend is killed; his investigation hits a dead end, then DNA test results give him the answers he needs, and the answers, like the crime itself, hit close to home.