The Baby Bears enter a Mexican wrestling tournament.

Wes throws a big party in the hopes of wooing new investors; LH7's tactics blow back on Ronald's family; Nick embarks on a secretive mission to save the company; an encounter with someone from Mara's past sends her into an emotional tailspin.

When patients from the hospital's prescription drug trial start suffering life threatening side effects, Nic fears that her sister Jessie may be in danger. As a result, she and Conrad work to convince Bell that these trials are not worth the risk. Meanwhile, Mina, Austin and Kit must set aside their competitive nature and work together on a patient whose health is quickly deteriorating and Devon uses Julian as the beta tester for a product he's designed.

Dave plans a special anniversary celebration for Gemma while Calvin and Tina babysit the Johnsons' son, Grover, during an evening when nothing goes according to plan.

The remaining eight couples dance to country music songs.

The coaches enlist Mariah Carey as Key Advisor on the final night of Knockouts, when the coaches pair their artists to perform solo, then select just one of them to move on to the Playoffs.

Oliver makes a drastic move in his quest to find Diaz. Like her husband, Felicity pulls out all the stops to get to Diaz. Meanwhile, when arsonists target Rene's community center, injuring Zoe in the process, the mysterious new Green Arrow swoops in to help save the day. Faced with pressure from the mayor to capture the vigilante, Dinah must decide if following the rules at all costs is the best plan to keep the city safe.

When Watts kills a man in self-defense and Murdoch uncovers the victim's criminal past, questions surround Watts' story.

When Cooper turns to Jake and Claire for advice on a big romantic gesture to impress a popular singer, they realize they should start making grand gestures in their own relationship.

When the Legends discover a fugitive is hiding in 1970's London, they realize he is part of a gang that is targeting the British Monarchy. Trying to stop the gang, they realize someone from the Legends must infiltrate them. Surprising everyone, Ray is the one to gain their trust after he is put through a series of tests with help from Sara and Rory. Meanwhile, Gary shows Nate the ropes at the Time Bureau, but it turns out to be anything other than an ordinary day at the office.

Mary's job is threatened when she accuses Detective Greyson of hiding evidence. Has she overstepped her bounds, or is Greyson a dirty cop?

Buck jumps back into the dating scene but fears he will return to his pre-Abby scoundrel-ous ways, while questioning if Maddie and Chimney are more than just friends. Emergencies involve a woman goes to great extremes on top of a freeway overpass to get the attention of her husband; A couple are involved in a car accident on their wedding day and a first date goes down the toilet.

Magnum takes the case of a little girl's missing cat and, in the process, stumbles upon another cat's murdered owner who happens to be an FBI agent.

Bull confronts his guilt over closing his psychiatric practice to start TAC when his former patient, a young woman who is a clinical sociopath, goes on trial for killing her brother. When Bull and Benny's client has no memory of the crime due to her mental condition, they enter a "Not Guilty by Reason of Insanity" plea and aim to seat jurors that are sympathetic to mental illness.

Morgan and Shaun's indecision on how to treat a young violinist who visits the ER with an infected finger could affect her future in more ways than one. Meanwhile, Lim, Claire and Park can't figure out if their young patient is really ill or looking for attention.

When Cal wakes with a life-threatening fever, Grace worries it's a side-effect of his experimental cancer treatment, but Michaela and Ben suspect Cal's condition may be related to a mysterious passenger from Flight 828. As Cal's situation worsens, Ben and Michaela attempt to track down the now-missing passenger.

Election Day Eve special episode; all one needs to know about this week's election; the importance of voting.

President Trump threatens Iran via a meme, celebrities implore people to vote in the midterms, and Trevor interviews Ohio Gov. John Kasich and New Jersey Sen. Cory Booker.

A very pregnant Patient 6 visits Dream Corp LLC desperate to be cured of her strange addiction to eating couch cushions. Randy makes a cyst popping video.

Coming Soon...

Stephen welcomes actor Jude Law, Senator Amy Klobuchar, and chef Flynn McGarry.

Roberts' old roommate, Bill Ruff, pays a visit to Dream Corp LLC under the guise of selling bad office artwork. Everyone in the staff is charmed except for 88 who makes it his mission to expose Bill's real intentions.

Walter feels uneasy about Shrier's absence, but Heidi is able to reassure him. Thomas is met with resistance when he attempts to investigate a lead.

As a crisis mounts in Syria, Russian President Viktor Petrov wants to make a deal with Claire. Questions arise about Tom Yates's whereabouts.

Coming Soon...

The lines between past and present blur as Hanssen tries to bring the hospital back from the brink. Gaskell's descent into chaos leaves Jac fearing for her life, and Meena's crusade for truth faces a set-back when she loses the only ally she had left.

In opposition to the pope, Lorenzo moves quickly to acquire the strategic city of Imola. A forbidden love flowers between Giuliano and Simonetta.

Romesh announces a speciality curry night with a fantastic local chef. His plan is to take on rival landlord David Foster, who's started serving up posh hipster food.

The papal army advances as important coalitions shift. Meanwhile, Lorenzo negotiates a crucial treaty, and Jacopo attempts a major power grab.

Robin takes the other Titans on a trip through the dizzying world of quantum physics.