Since 1982, when she wrote her debut masterpiece "The House of the Spirits," and in the more than 20 books, fiction and nonfiction, she has written since — some fine, some forgettable — Isabel Allende has shown a strong grasp of what makes a story powerful.

Her empathy for people from all walks of life runs like a current through her work. Joy, grief, hatred, love, struggle, redemption, illness and healing play roles in all of her stories. She understands the power of memory, aging, forgiveness, of time itself to shape a life or a story.

Yet in her past few novels, her wisdom has been oversugared with sentimentality and Oprah-style psychology. Before we can even briefly observe a newly introduced character, she is telling us all about him or her, usually withholding one secret that we can easily guess. The dialogue is glib; the characters all sound just like the chipper narrator.

Thus, in her latest novel, "The Japanese Lover," you get conversations like this:

" 'I spent my youth searching for approval and adventures, until I really fell in love. Afterward my heart was broken and I spent a decade trying to pick up the pieces.'

" 'And did you succeed?'

Isabel Allende

" 'Let's say I did, thanks to a smorgasbord of psychology: individual, group, gestalt, biodynamic therapies. Anything I could lay my hands on, including primal scream therapy.' "

On the surface, the material is promising, dark stuff. Irina, a twenty-something survivor of childhood poverty in Moldavia and horrific sexual predation in Texas, takes a job at a funky home for the elderly — most of them old hippies and freethinkers — in the San Francisco area. There she meets Alma Balasco, a fiercely private, proud woman whose past is explored in flashbacks.

As a child, Alma is sent to live with her aunt and uncle in California by her Polish Jewish parents, who soon disappear into the Holocaust. As a child, she falls in love with Ichimei, the son of her uncle's Japanese gardener. That passion proves lifelong, lasting through Ichimei's incarceration in the World War II Japanese-American internment camps and Alma's marriage to a man with a not-too-hard-to-ascertain secret of his own.

Alma's grown grandson, Seth, falls in love with Irina, and together they set out to find out more about regal old Alma, as well as to heal their own wounds.

Romantic passion is Allende's favorite subject, and the story of Alma and Ichimei is sweet. But it's ultimately not easy to understand why they're so drawn to each other, and hard to care.

The book contains many earnest, educational pages about great injustices — the Holocaust, racism, poverty and sex trafficking. These scourges come across more like stage backdrops than shapers of a human soul.

Were this the work of a lesser talent than Allende, now 73, it would be a charming romance. But it's hard to give up the belief that she is capable of more complex, subtle stories of the heart, which she undeniably knows very well.

Pamela Miller is the Star Tribune's west/north team metro ­editor.