Sabrina Brooks is a wildly successful, bestselling author of gripping thrillers. Unlike her fictional characters, Sabrina lives a quiet life in the Berkshire Mountains with her two beloved dogs. But behind this peaceful exterior is a dark, painful past. As a child raised by an emotionally distant father, Sabrina rarely felt love. And as an adult, her marriage twisted into an abusive relationship from which she had to escape.

Oscar-winning actress Ardith Law is a Hollywood icon. Radiant at sixty-two, she is the epitome of glamour and a highly respected artist. But her success has come at a price: she has a strained relationship with her daughter, Morgan, who at thirty-eight still blames Ardith for putting her career before being a mother. Morgan is a successful plastic surgeon in New York City—and the distance from Ardith's Bel Air mansion is not lost on either of them. Ardith became a single mother when Morgan was seven, after her unfaithful husband died in a helicopter accident.

Ellen Wharton has flown into New York from London, regardless of the weather and her husband's worry. The successful interior designer is intent on seeing her lively architect mother and has an important personal appointment to keep. But despite Ellen's urging, when the storm hits, seventy-four-year-old Grace Madison refuses to leave her Tribeca apartment in the midst of the evacuation zone, and they must eventually wade through chest-high water to the police boats outside.

When she is only six years old, Allegra Dixon’s party-loving mother leaves without so much as a goodbye. Her father, an emotionally distant military officer, is also unable—or unwilling—to care for her. Sent to live like a ghost in her grandparents’ joyless home, Allegra finds her only solace through an escape into books. Attending boarding school, life finally takes a turn when she meets a dashing young West Point cadet named Shep Williams. Soon their friendship blossoms into something more, and they fall deeply in love.

Kezia Cooper Hobson, recently widowed, arrives in New York from San Francisco. Determined to make a fresh start, she has just completed the sale of her Pacific Heights home, not to mention her husband's venture capital firm, and in doing so, is also freed from her responsibility as a board member of the company. Bringing with her only a few personal treasures, she is excited to move into the blank slate of a beautiful midtown penthouse, in the city that she has always loved. It is also where her two adult daughters now live.

After her parents perish in a tragic accident, Cosima Saverio assumes leadership of her family's haute couture Italian leather brand. While navigating the challenges of running a company at twenty-three, Cosima must also maintain the four-hundred-year-old family palazzo in Venice and care for her younger siblings. Cosima navigates her personal and professional challenges with a wisdom beyond her years, but her success has come at a cost: Her needs are always secondary. She's married to the business, and her free time is given to those who rely on her . . . until she meets Olivier Bayard.

Born to a French mother and American father, graceful Dahlia de Beaumont has been sole owner and CEO of the venerable family perfume business based in Paris since her early twenties, following the death of her parents. For twenty-five years, after losing her husband in an avalanche, her life has centered on running Lambert Perfumes and being a devoted single mother to her four children: indecisive Charles, volatile Alexa, kind-hearted business visionary Delphine, and dreamy artist Emma. Now fifty-six, she has an "arrangement" with a married man but has been questioning that relationship.

As the head of a prestigious movie studio for nearly two decades, Andy Westfield has had every conceivable professional luxury: a stunning office on the forty-fourth floor, a loyal assistant who can all but read his mind, access to a private jet and company cars. The son of Hollywood royalty, Andy always put his career before his marriage, and now, besides his daughter and young grandchildren, it’s the only thing he truly loves. But then Andy’s world is upended. The studio is sold, and the buyer’s son demands the top seat. Out of a job and humiliated, Andy spirals.

As she approaches the milestone birthday of forty, delicate blond beauty Amanda Delanoe finds joy in running a chic contemporary art gallery in the City of Light. The only child of a French businessman and an American model, both now deceased, Amanda lives well and adores her dog, Lulu, but so far the love of her life has eluded her.

With wit and intelligence, Danielle Steel explores love in all its guises, taking us into the lives of three unusual but wonderfully real couples. One Day at a Time is at once moving, thought provoking, and utterly impossible to put down.