FICTION
1. BEST FRIENDS FOREVER, by Jennifer Weiner. (Atria, $26.99.) Childhood friends, estranged in high school, reunite years later when the popular one needs the mousy one's help.
2. SWIMSUIT, by James Patterson and Maxine Paetro. (Little, Brown, $27.99.) A former cop, now a reporter for the Los Angeles Times, investigates the disappearance of a supermodel.
3. BLACK HILLS, by Nora Roberts. (Putnam, $26.95.) South Dakota wildlife biologist and an ex-cop, childhood sweethearts, reunite to pursue a serial killer.
4. FINGER LICKIN' FIFTEEN, by Janet Evanovich. (St. Martin's, $27.95.) Bounty hunter Stephanie Plum tracks a celebrity chef's killer.
5. THE HELP, by Kathryn Stockett. (Amy Einhorn/Putnam, $24.95.) A young white woman and two black maids in 1960s Mississippi.
6. RAIN GODS, by James Lee Burke. (Simon & Schuster, $25.99.) A Texas sheriff investigates a mass murder of illegal aliens and tries to find the young Iraq war veteran who may have been involved before the FBI can.
7 (x). THE DOOMSDAY KEY, by James Rollins. (Morrow/HarperCollins, $27.99.) Sigma Force operatives attempt to solve an ancient mystery that has deadly consequences.
8. THE DEVIL'S PUNCHBOWL, by Greg Iles. (Scribner, $26.99.) The mayor of Natchez, Miss., pursues a killer who opposes his attempt to clean up riverboat gambling.
9. THE APOSTLE, by Brad Thor. (Atria, $26.99.) Scot Harvath, a Homeland Security superagent, is asked to free an al-Qaida mastermind from an Afghan prison as part of a ransom deal.
10. GUARDIAN OF LIES, by Steve Martini. (Morrow/HarperCollins, $26.99.) Lawyer Paul Madriani unravels a mystery involving gold coins, the CIA and a weapon forgotten since the Cuban missile crisis.
NONFICTION
1. UNMASKED, by Ian Halperin. (Simon Spotlight Entertainment, $25.) Michael Jackson's final years.
2. OUTLIERS, by Malcolm Gladwell. (Little, Brown, $27.99.) Why some people succeed, from the author of "Blink."
3. LIBERTY AND TYRANNY, by Mark R. Levin. (Threshold Editions, $25.) A conservative manifesto from a talk-show host and president of Landmark Legal Foundation.
4. CATASTROPHE, by Dick Morris and Eileen McGann. (Harper/HarperCollins, $26.99.) Stopping President Obama before he transforms America into a socialist state. (b)
5. THE ACCIDENTAL BILLIONAIRES, by Ben Mezrich. (Doubleday, $25.) How two Harvard undergraduates created Facebook.
6. HORSE SOLDIERS, by Doug Stanton. (Scribner, $28.) A small group of Special Forces soldiers fought the Taliban on horseback shortly after 9/11.
7. THE END OF OVEREATING, by David A. Kessler. (Rodale, $25.95.) How eating sugar, fat and salt affects our minds and bodies and encourages overindulgence.
8. BOBBY AND JACKIE, by C. David Heymann. (Atria, $26.) The connection between Bobby and Jackie Kennedy.
9 (x). THE BECKHAM EXPERIMENT, by Grant Wahl. (Crown, $24.99.) David Beckham's attempt to transform soccer into a popular sport in America.
10. MOMMYWOOD, by Tori Spelling with Hilary Liftin. (Simon Spotlight Entertainment, $25.) Humorous stories about Hollywood motherhood.
ADVICE, HOW-TO AND MISCELLANEOUS
1. ACT LIKE A LADY, THINK LIKE A MAN, by Steve Harvey with Denene Millner. (Amistad/HarperCollins, $23.99.) Relationship tips from the comedian and host of "The Steve Harvey Morning Show."
2. THE LAST LECTURE, by Randy Pausch with Jeffrey Zaslow. (Hyperion, $21.95.) Thoughts on "seizing every moment" from Pausch, a Carnegie-Mellon professor who died of pancreatic cancer at age 47.
3. MASTER YOUR METABOLISM, by Jillian Michaels with Mariska van Aalst. (Crown, $26.) A plan for removing toxins and rebalancing hormones to lose weight, by a trainer and coach from "The Biggest Loser" on NBC.
4. THE SECRET, by Rhonda Byrne. (Atria/Beyond Words, $23.95.) The law of attraction as a key to getting what you want.
5. EXCUSES BEGONE! by Wayne W. Dyer. (Hay House, $24.95.) How to throw out old excuses and embrace new ways of thinking to achieve happiness. (b)
An (x) indicates that a book's sales are barely distinguishable from those of the book above. A (b) indicates that some bookstores report receiving bulk orders. Rankings reflect sales for the week ending July 18 at many thousands of venues.