On August 16, 2010, South Carolina mother Shaquan Duley suffocated her young sons to death in a hotel room as her then-5-year-old daughter, Saniya, was in the care of her grandmother and aunt. Now 7, Saniya is living with her grandmother while her mother is incarcerated. Watch as Oprah talks with Saniya about her mother, her brothers and how her life has changed.

At the time Shaquan Duley's sister, Adriane, appeared on The Oprah Winfrey Show in September 2010, she said she never discussed the night her sister killed her nephews. Since then, the sisters have talked. Watch as Adriane explains why it was important to her that Shaquan take responsibility, opens up about their relationship today and reveals how her family is still coping with the deaths of Devean and Ja'Van.

Carl B. Grant is the attorney representing Shaquan Duley. Watch as he explains how an insanity plea works in the courts and why it would likely not have applied in Shaquan Duley's case.

Days before sentencing, Oprah sits down behind bars with Shaquan Duley, a South Carolina mother who pleaded guilty to murdering her two young sons. Watch as she tells Oprah her hopes for sentencing and why she asked for mercy from the court.

In her first television interview, one week before being sentenced, Shaquan Duley sits down with Oprah Winfrey behind bars at the Orangeburg-Calhoun Regional Detention Center in Orangeburg, South Carolina. Plus, Oprah talks with the Duley family. Watch a sneak preview now; then, tune in Sunday, April 1, for the complete conversation.

In her first and only television interview, one week before being sentenced, Shaquan Duley sits down with Oprah Winfrey behind bars at the Orangeburg-Calhoun Regional Detention Center in Orangeburg, South Carolina. Watch the first 30 seconds of the show; then, tune in Sunday, April 1, at 9/8c for the complete conversation.

Shaquan Duley made national headlines after admitting to the police that she suffocated her 2-year-old and 18-month-old sons on August 16, 2010. The 29-year-old woman says she fought with her sister and mother that morning before taking her boys to her father's house. Duley says that after leaving his home, she drove to a gas station and purchased several packets of a combination pain remedy and sleep aid with the intention of overdosing herself and her sons. Watch as she discusses her state of mind at the time with Oprah.

Oprah spends the day in Fairfield, Iowa, one of the safest, greenest and most unusual communities in America. It's the last place you'd expect to find two huge golden domes built for the thousands of residents who rush there to meditate twice a day. Watch a sneak preview; then tune in for the full episode of Oprah's Next Chapter on Sunday, March 25, at 9/8c.

The Maharishi School of the Age of Enlightenment uses "consciousness-based education" to teach children from kindergarten to 12th grade everything from college prep to spiritual awakening. Watch as Oprah tours the school and shares a meditation session with some of the older students.

Fairfield is a quiet community nestled among the cornfields of Iowa. It's also the center of the transcendental movement in the United States. Many of the 9,000 residents who live here meditate every day, including the Winer family. Watch as the Winers reveal why they left an affluent suburb outside of Atlanta to move to Fairfield. Plus, find out how the architecture of homes in Fairfield can improve a homeowner's happiness.