Nick Harwell arrives to train Ben but becomes interested in buying Spartan. Mallory thinks Lou plans to re-home Copper and runs away with him, only to discover a plot to sell wild mustangs.

House and his team have to diagnose a case at a distance when a researcher at a South Pole base is taken ill.

When Art and Danny try to breed lions successfully, they end up getting seriously injured. Jesse wants to leave South Africa to go after Mbali in New York, but Katie doesn't want him to.

Jenny throws a party for the girls to get to meet their movie counterparts -- with mixed results. Shane stirs up drama between Dawn and Cindi, which escalates into bitter rivalry between The Planet and SheBar. Meanwhile, Alice is stunned by a basketball star's gay-bashing on national TV.

"Just because they're in the street doesn't mean they lack opinions". - Haynes

Marlo forges an alliance with a drug connect, who shows him a new communications trick; McNulty's case gets increased attention from the newspaper, in large part thanks to the addition of Templeton to the reporting team; Dukie turns to Dennis "Cutty" Wise and Michael to hone his pitiful self-defense skills; Clay Davis finds a new ally; State's Attorney Rupert Bond raises his public profile; Maurice Levy and Herc prepare for litigation; Elena confronts her ex-husband about his behavior; Bubbles has fears about new opportunities; Greggs gets some overtime work; Omar shows patience as Marlo throws out his bait.

Jonny stages a crash to see what happens when children ride without seat belts in the back of taxis. Tom and Jonny enter a 24-hour off-road driving event. Vicki tests an 18-year-old Lotus Carlton against one of it's modern rivals the Vauxhall VXR8.