The phrase "an episode that involves" is correct and usable in written English.
You can use it when describing a specific episode of a show, podcast, or any narrative that includes certain elements or themes.
Example: "In this season, there is an episode that involves time travel and its consequences on the characters' lives."
Alternatives: "an episode featuring" or "an episode centered around".
Her lawyer said she had nothing to say about "an episode that involves personal and familial relationships".
At the end of an episode that involves a foursome and also some personal disappointment, Belle turns to the camera and says, "Sex is really a numbers game.
According to TV Line Brewster will appear alongside Brie Larson, who is reprising her role as Rachel (who shared a spark with Danny Pudi's Abed in Season 4's "Herstory of Dance"), as well as "X-Files" favorite Robert Patrick, musician Ben Folds and Franklinn & Bash's" Kumail Nanjiani in an episode that involves "a midterms-centered dance".
The newcomer is Guy Fontaine, who, like most of the residents, has been dumped into Mission Pescadero against his will (in his case, by a daughter, after an episode that involved driving a golf cart down a freeway).
The writers wanted to do an episode that involved a couple getting divorced.
Gainor has been critical of the show before; in October, after an episode that involved two cheerleaders making out on a bed, he called "Glee" "a disgusting gay teen sex romp".
It returned Monday, with the first of a multi-part episode that involves Wain, who plays a sad-sack version of himself, dating a New York Times theatre critic with an insatiable sexual appetite.
In "San Junipero," another new episode that involves simulated reality, two characters are caught in a downpour.
Quicker than you can say, "Duke lacrosse team," Bennie brings up an ugly college episode that involved Kyle, his Duquesne University fraternity brothers and a woman named Elaine who now claims to have been raped by four of them at a party.
The smallpox push is reminiscent of an earlier vaccination episode that involved the anthrax vaccine.
After the character development that had occurred in the previous episode, "Booze Cruise", Greg Daniels decided to create a more inane episode that involved "Michael's grilled foot".
