Linda jumps at the chance to chaperone Tina’s weekend away at a heroine conference, but Tina’s new friend could put Linda’s perfect weekend in jeopardy. Meanwhile, the younger Belchers have plans for their weekend alone with Bob. What could possibly go wrong?

Chuck, Connerty and Sacker must rely on an anxious insider who's willing to wear a wire. Meanwhile, Axe's numbers take a big hit, leaving him to scout ideas for a quick play with a huge payoff. Wendy rediscovers her passion for her former job at Axe Capital through an old colleague. The reality of Lara's business starts to affect her marriage.

The police call in Holmes and Watson to consult on a homicide "heard" by a cutting edge gunshot detection system. Sherlock and Joan become suspicious of Shinwell when he's the target of a drive-by shooting that reveals a connection between him and an unsolved murder.

In an attempt to avoid eating the healthy food that Lois forces him to eat, Peter opens up his own food truck with fattening foods. Meanwhile, Meg joins a roller derby team, despite Chris thinking it’s too dangerous.

Marnie tries to convince a resistant Desi to follow through with their planned gig at her mom’s birthday party in New Jersey. After rebuffing Adam’s request to watch his film, Hannah gets advice on an important decision from her dad and his new partner, Keith. Elijah’s thespian talents are rekindled when he helps a coworker run lines for an audition.

Carrie catches a break. Keane makes a plan. Max goes undercover.

Elizabeth's landmark global climate treaty with more than 200 countries is jeopardized when China threatens to back out due to her meeting with an ailing Dalai Lama. Also, Henry worries about his undercover operative's safety, and Jay is surprised when Abby serves him with a custody agreement for their daughter.

After the U.S. Treasury Department is hacked, Nell and Eric go undercover inside a couple’s retreat to track a tech savvy husband and wife linked to the crime. Also, Digital Forensics Specialist Dave Flynn arrives from the NCIS Cyber Office in San Diego to run Ops while Eric and Nell are on assignment.

When Gideon resumes his mission to kill Emma and become the Savior, Mr. Gold steps in to ensure that the use of dark magic does not poison his son. Meanwhile, Robin proves willing to ally himself with anyone offering the possibility of escape from Regina and Storybrooke. Hook gathers the courage to come clean to Emma, but not before she discovers he's been keeping a secret. And in a flashback to Fairy Tale Land, the legendary folk hero Beowulf sets his sights on Rumplestiltskin after the Dark One uses his powers to defeat the ogres and win the war for humanity.

Alex and Charlie are confused about their relationship; Alex and Maggie disagree about a car crash survivor; Dana is forced to treat an injured motorcyclist; Zach bothers Maggie about dating.

Aspects of Megan's private life are leaked onto the Internet; Terence and DeAnn confront the studio's rising concerns about Megan; Hope and Shaun must figure out how they fit into Megan's new life.

Worried that Bart is destined for failure, Marge turns to a series of parenting "experts" for advice. Homer decides to cash in on one expert’s advice by opening up a trophy store in Springfield. Meanwhile, Bart finds some needed encouragement from Grampa, who gives him a precious watch coveted by Homer.

The Saviors visit the Hilltop unexpectedly, surprising everyone with plans of taking more than supplies.

Matt LeBlanc's review of the Aston Martin DB11 is thwarted by Chris Harris and a very evil Mercedes. Elsewhere, Rory Reid and Sabine Schmitz go supercar-hunting on Germany's fearsome Nurburgring race circuit with the help of the VW Golf Clubsport S, while actress Tamsin Greig takes to the Top Gear track in the new Reasonably Fast Car.