Think having three wives is a dream come true? Meet Bill Henrickson (Bill Paxton), a modern-day Utah polygamist who lives in suburban Salt Lake City with his three wives, seven children, and a mounting avalanche of debt and demands. The owner of a growing chain of home improvement stores, Bill struggles to balance the financial and emotional needs of Barb, Nicki and Margene (Jeanne Tripplehorn, Chloë Sevigny and Ginnifer Goodwin), who live in separate, adjacent houses and take turns sharing their husband each night. While managing the household finances together and routinely sharing "family home nights," they try to keep simmering jealousies in check and their arrangement a secret — polygamy is illegal in Utah and banned by the mainstream Mormon Church. Adding to Bill's woes are a series of crises affecting his parents (Bruce Dern and Grace Zabriskie), who live on a fundamentalist compound in rural Utah, and his ruthless father-in-law, Roman (Harry Dean Stanton), the powerful head of the polygamist commune where his parents live. -- About the Show

Precious few TV cameras have been allowed inside the Playboy Mansion. None has ever gotten such a candid, all-access view of the elusive second floor residences of the English Tudor manse where Hugh M. Hefner and his girlfriends live and love beyond prying eyes. For several months of uncensored episodes, E!'s The Girls Next Door takes you up the stairs and into the bedrooms of Hef's leading ladies Holly [Madison], Bridget [Marquardt] and Kendra [Wilkinson] and lets you watch the drama unfold as they plan naughty birthday parties, go clubbing and entertain prospective Playmates. But it's not all parties and photo shoots; the girls live by Hef's rules, which include a strict curfew to be home by sundown, unless he's with them! Catch their playful adventures Sunday nights on E!. -- Playboy.com

A man finds a teenage girl nearly beaten to death. Don and the team are called in to investigate and discover that the girl escaped from a polygamous cult headed by a leader who is running from the FBI. Charlie and Amita decipher a breeding chart found at the leader's last known location and then track him to his current location.
. -- Yahoo TV

The show plot is more reminiscent of Waco, Texas than it is of polygamy. Yes, the cult leader has a lot of wives. No, prophets don't try to kill all their followers.