When last week's episode ended, Sue and Kelly were metaphorically skipping along the beach metaphorically holding hands while the theme from "The Courtship of Eddie's Father" ("People let me tell you 'bout my beh-est friend ...") played, metaphorically, on the soundtrack.

What a difference a week makes! Episode 11 was whistling a different tune and it went like this:

They smile in your face
All the time they wanna take your place
The backstabbers!"

After pledging her devotion to Kelly ("I trust her 100 percent") last week, Sue has discovered what Richard has long suspected about her new best friend -- Kelly has a devious streak to rival Sue's own.

Word has gotten around that Kelly had been trying to break with the Tagi alliance, while trying not to look like it, and start up a voting bloc with Colleen and the (now departed) Gervase. But Kelly is fooling no one.

"Me 'n' Kelly, I thought had a real friendship goin' but when I turn around and see somebody stickin' a knife in my back, that pisses me ahf," quoth the Midwestern trucker. Colleen knows what's going on as well: "Kelly's a double agent."

How does that saying go -- the enemy of my enemy is my friend, or something? (Richard probably knows it -- he's probably got it stitched on a needlepoint sampler over his kitchen doorway.) There are six castaways left; this time, everything is personal.

More news from the Kelly Wiglesworth police blotter: Earlier this week, the enterprising SmokingGun.com dug up another tidbit to go with the earlier news that Kelly was wanted by the state of North Carolina for credit card theft. A few years ago, Kelly was accused of battery by her then-newlywed hubby (since dumped). The husband is supposed to have called the police after a domestic row in which the combustible Ms. Wiglesworth bit him on the nose, drawing blood. He later dropped the complaint, probably fearing for his life.

We mention this because Kelly's bad girl side was in full view in Episode 11. The reward challenge is a variation of Trivial Pursuit, with questions all on the subject of survival; Dr. Sean wins in a sudden death face-off with Richard. His prize: a night on a luxury yacht eating real food, sleeping in a real bed, taking a real shower. Sean also gets to invite one person to the yacht for breakfast the next morning, and he tells Kelly it's her.

But that evening, just as he's leaving in the dinghy for the yacht, Sean panics. He realizes suddenly that if he invites Kelly, he'll piss off people more powerful than her. Frozen with fear and indecision ("Get some balls! Make a decision!," yells Susan helpfully), Sean tries to get Kelly to beg him to take her, but, not wanting to give envious rivals ammunition against her, she refuses.

Looking as if he's about to loose his bladder into his camp shorts, and with an endless loop of Keye Luke in his head advising, "Keep your friends close but your enemies closer, Grasshopper," Sean suddenly screeches, "Rich! You like scrambled eggs?"

Now playing: Read all the recent movie reviews by Salon's critics