It's date night in Purgatory, which means dressing up, drinking, and fighting demons as a formidable, former foe stalks the gang.
Casey feels less than welcome at Clayton. Sam asks Paige to spell out the rules of their "casual relationship," while Doug sets boundaries with Elsa.
In peer group, Sam realizes he needs to manage his own money. Doug gets advice from Megan on dealing with Elsa. Evan meets Casey's new friends.
Zahid teaches Sam to lie, while Elsa practices being honest. Evan helps Casey get over an embarrassment. A doctor visit forces Julia out of denial.
A peer group meeting leads Sam to an important decision. Detention with Izzie shows Casey they have more in common than she thought.
To prepare for college life, Sam sleeps over at Zahid's. Sam's $700 loss reunites Doug and Elsa with Arlo's parents, former friends of theirs.
Sam loses his portfolio for his art school application and panics. Megan gets flirty with Doug, who makes a decision about Elsa. Julia calls Miles.
Blake puts his grand plan into action forcing Harry to summon all of his courage to take on his nemesis without the aid of the bracelets in the last-ever episode of the thriller.
Casey tells Izzie what Nate did. Sam tries to figure out which colleges to apply to. Doug discovers a need to educate first responders about autism.
There's a new Iron Fist in town, and he's itching to make his presence felt. Meanwhile, Ward calls in a favor, and Joy considers her options.
Misty and Colleen's trip to the tattoo parlor turns painful -- but not for them. As Davos crosses names off his list, Mary makes Danny an offer.
Ignoring Casey's wishes, Elsa throws her a big birthday party, while Sam insists on following a decade-old birthday ritual. The bartender haunts Doug.
Cruel yearbook comments show Sam who's got his back, a favor he repays at graduation. Feelings for Izzie confuse Casey. Elsa asks Doug a key question.
Lloyd and some of the resistance fighters are on the brink of capture in Nya's vehicle. In the Realm of Oni and Dragon, the ninjas and Wu go on the run.
Dara O'Briain and Hugh Dennis look back on another eventful week around the world with the help of guests Angela Barnes, Ed Gamble, Rhys James, Nish Kumar and Tiff Stevenson.
Trevor Jackson and Deon Cole face off with Nick in Atlanta in So Superfly, Step Your Game Up, R&Beef and Wildstyle, with special guest Michael Blackson.
The team is trapped in an ancient, underground tunnel putting the search at risk. Using just the gear they have on site, the crew rigs a remote-controlled camera that finds the expedition's most significant treasure.