Cain and Abel: A cousins version, when Bo and Luke get into a huge fight over Diane. Luke had revealed evidence that Diane has some secrets to hide about her traveling stunt show, and Bo — seeking stardom and a totally hot babe to hold in his arms — won't listen to reason. It leads to a knock-down, drag-em-out brawl that can't be resolved with a simple "I'm sorry," hug and go about their day like nothing had happened.
Circus Episode: As close as it got — a carnival that goes along with a stunt show.
Evil Is Sexy: Metaphorically speaking, Bo taken in by pleasure, desire and addiction to lust and sex as he falls for Diane Benson. At this point in the series, with him definitely thinking with his hormones rather than taking a step back and weighing the risks vs. rewards, this is definitely in line with Bo's character. Luke, on the other hand, is suspicious of Diane early on, especially after hearing rumors about the show's poor safety record, and keeps a cool head.
Femme Fatale: Diane Benson, plain and simple, front and center.
Insurance Fraud: The carnival stunt show is a front for Diane's insurance scheme ... collecting after each "accident."
Love Makes You Crazy: Bo's obvious romantic feelings for Diane Benson clouds his judgement and suspicions over the Carnival of Thrills' notoriously poor safety record, and leads to a temporary estrangement from his family.
Not So Stoic: Jesse and Daisy, once they realize there is little they can do to stop a growing feud between Bo and Luke.
The Runaway: Bo, after his huge fight with Luke. And he's not leaving for just a little while to cool off.
Shirtless Scene: In one of the only if not the only scene of its kind in the series' entire seven-year run, Bo and Diane are shown (in a transitional scene) together at night, in bed ... both of them shirtless and engaging in foreplay leading to sex. (This is used to frame Diane's seductive ways and to pull the naîve, unsuspecting Bo into her web.) And this is in a series where, in various past episodes, it was implied that Bo (and Luke) have spent the night with several hot-looking women.