After the death of someone close to him, Oliver decides to give himself up to Slade rather than risk further bloodshed on his friends and family. Meanwhile, Laurel renews her investigation into Sebastian Blood, and Slade makes his final plans to unleash his Mirakuru-enhanced army on Starling City.
Victims of arsenic poisoning are found in Long Beach. The investigation reveals that the killer has a fascination with Greek mythology, based on handwritten death threats to the deceased and other mysterious clues. Meanwhile, Hotch becomes concerned about participating in Jack's third-grade career day.
Phil fails at his one task to stay home and wait for the repairman, forcing him to tell an elaborate lie to hide the truth from Claire, but the stress is more than he can physically handle. Meanwhile, Gloria is obsessing over the family portrait she is responsible for organizing this year. Claire accuses Cam of being too snobby to use her girls’ hand-me-downs and Jay secretly enters Stella in a dog show.
When Dalia is rejected from the only college she applied to, Dallas is determined to help her daughter find her calling; George and Tessa go on a double date.
Boyce and Stamps go with Barton on a road trip. Lolli offers Kim some child-rearing advice. Kim thinks that she could be pregnant.
As Miles, Monroe, Charlie and Connor rush to escape Austin, a confrontation with Texas Rangers separates Miles from the group. While out searching for Miles, Charlie is confronted by Neville who demands information on Jason's whereabouts. As a wounded Miles faces increasingly hopeless circumstances, Aaron learns that the nanotech has been busy.
Richard examines how accidents can occur while knocking down buildings, sledging and abusing airbags.
Riley tries to figure out who her biological father is and comes up with two candidates. Elsewhere, Tucker blames his dad for his parents' impending divorce, so Bonnie attempts to help by getting Tucker's father to be less rigid.
Richard uses science and home footage to reveal the humiliating and painful potential of riding a rodeo bull, and hanging upside down.
One castaway's bidding strategy at the Survivor auction could pay off for them. Meanwhile, castaways draw rocks for a huge advantage in the game, and another castaway decides to show off his idol in an attempt to ensure his safety.
While Bellamy tortures the Grounder, Raven and Clarke make contact with the Ark and ask Abby to help them save Finn. On the Ark, Kane deals with his guilt, and Jaha surprises the council with a shocking revelation.
Megan goes camping with boys without permission and the Koloff girls throw Teryn a bachelorette party. Taylor worries about losing both her parents after Ken's health scares. Kenny and Monique confront Tori about her partying.
The Intelligence Unit works to find the bombers. Even with government agencies in the mix, Voight and his team work the case from their own angles and connections. Lindsay and Antonio question doctors who handled the transplant surgery for an Ambassador from Syria, but no clues emerge. Olinsky gets some solid intel and the team work from there. It’s a race against time as they realize there may be additional bombs targeted to detonate. Meanwhile Burgess sits vigil for her niece whose life hangs in the balance. The crossover starts on Chicago Fire S02E20 A Dark Day (I).
After a battle damages the Fish Stew Pizza sign, the Gems are banned from the restaurant, so Steven throws a cookout on the beachside to mend the relationship between the Pizza family and the Gems.
High emotions and yelling mark Robert's trip to "Bumbino's Italian Ristorante" in Orange County, Florida, where he deals with crumbling relationships, the firing of staff and a switch made in the kitchen.
Military equipment collector Bruce Compton travels the world to view vehicles and memorabilia worth buying and restoring. In the first edition, the larger-than-life Londoner gets his hands on a 70-year-old Volkswagen Schwimmwagen - an amphibious car that he test-drives through a lake at a country fare.
A new mission with international stakes has Philip calling on Annelise for assistance just as an old foe returns to D.C. with a vendetta. Stan makes a discovery that could put the FBI hot on the trail of illegals.