A recap of what has happened so far in the season.

Robbie Amell is a guest on the show this week.

The cooks compete to feed 500 male and female troops on a desert Army base; the losing team faces a pressure test featuring blueberry pie.

American Ninja Warrior travels to St. Louis, Missouri where competitors face new obstacles the Rope Junction Into Cargo, Double Tilted Ladder and Crazy Cliffhanger. X-Games gold medalist Kevin Robinson, motorcycle racer Dominic Anderson and "Ghost Adventures" host Nick Groff compete. Former Olympic gymnast turned police officer, Terin Humphrey, returns for another shot at completing the course. Competitors in this rigorous obstacle course competition series vie for a chance to win a cash prize of $500,000 and the title American Ninja Warrior.

A shocking development occurs during Sloane's investigation. Jelena manages to get the upper hand over Ahsha.

Following an intense and deadly shootout, Jack and Kate are in a race against time to save the life of a key player tied to the imminent terror threat. Meanwhile, Jordan Reed is ordered into the field on a perilous mission. Then, after President Heller engages Margot to end her savage attacks, he faces an unthinkable, game-changing decision.

After a tip about a dance company, the team investigates the abduction of a ballerina.

When a father and his two young children go missing, the squad has to work quickly to find them, while uncovering a slew of terrible family secrets along the way. Meanwhile, Raydor does her best to trust Rusty as he begins to take suspicious trips out on his own.

When Vincent becomes the subject of a city-wide manhunt, he and Cat try to stay below the radar. But they find a surprising ally when the FBI approaches them about helping on an important case.

Deckhands come to the rescue when their captains falter. One hunter is unexpectedly placed in the captain's seat, while another team must make it through the day when their skipper suffers a gruesome injury. Another deckhand insists on changing hunting grounds and leads them to one of their best days of the season.

In a desperate move, Cassie turns to Ron for bailout money for Bobby's new business.

April has a blissful affair with an attractive artist; Harry and Joss clash over everything when a wealthy housewife hires them to throw a lavish party; Savi must share an office with an attorney who lacks boundaries.

When a junkie is murdered in the Tenderloin district, SFPD detectives Terry English and Hildy Mulligan are shocked to discover the case may be related to the city's youngest billionaire, tech genius Erich Blunt. But Terry's ability to focus is troubled as his wife battles stage 4 pancreatic cancer. Just as the inspectors begin closing in on the case, Blunt's beautiful flight attendant is found dead.

Louie thinks about his past.

When a tenement-building shooting leads to the discovery of an executed gang leader, 15 Division must race to find the killer before a gang war breaks out. As the murderer zeroes in on the one witness who can tie him to the crime, Andy and her rookie, Duncan, are put to a life-and-death test of true police heroism.

An investigation into the murder of a Russian adoptee leads the team into a shady underworld; Henry faces trouble behind bars while Cady attempts to secure him competent legal representation.

Grandpa finds his personal assistant program on his phone becoming completley obsessed with him.

Louie continues to think about his past.

Philip K. Howard

Channing Tatum, Jonah Hill, Grouplove

Esther Perel

Tonight Jimmy's guests is actor Clint Eastwood. Musical guest will be Jack White.

Kelsey Grammer, Bill Scheft, Willie Nelson

Sophia gives the women and much-needed lesson in the female anatomy; Morello takes a detour; Larry makes some life changes.

3 celebrity contestants compete to determine who has the funniest take on the day's pop culture.

Seth was joined by Steve Buscemi and Jake Tapper, plus music from Sia.

Dennis Miller, Ashley Madekwe

The three best performers in the invention test are vying for immunity. However, they must produce a dish using either a blow torch, a smoking gun or a cream whip dispenser.

Simmo warns Bea of an impending hit against her by the Holts, in retaliation for her attack on Brayden. With the induction of three new prisoners into Wentworth, Bea is jumping at shadows, not sure from which of them will attack.

A determined Amy throws her weight behind helping Harry shine. Jac's childcare nightmare gets worse when Elliot lends a hand.

Genny is cornered when the Savastanos' rivals rally around Conte to help exact revenge for Daniele's death, and he also faces trouble within his own ranks as a deadly battle erupts between his supporters and the old lieutenants. Imma is forced to intervene and manages to establish a fragile order within the clan, as well as realising that Ciro is behind this war.

War breaks out on the streets of Naples and Ciro flees to Rome with his wife and daughter as both clans barricade themselves in their apartment bunkers, entering into a lethal stalemate. Meanwhile, a vengeful Genny hunts down Ciro, intent on seeking justice for his betrayal.