Christi Jo Nichols was a loving 22 year old mother to her 2 young children. She was also trapped in an abusive relationship at the hands of her husband Mark. She had been taking steps to leave him with her children when on the night of December 10, 1987, the couple left their two children with a babysitter while they went out for the night. By the next day, Christi Jo Nichols would be a missing person. Suspicion would immediately fall on Mark Nichols due to his abusive behavior and his own accounts which didn't corroborate with the accounts of others. Many in law enforcement believe that Mark is responsible for Christi's disappearance, but 32 years later, Mark has never been charged in connection with the disappearance, and no trace of Christi Jo Nichols has ever been found.

Sources for this episode:

https://lostnfoundblogs.com/f/christi-nichols-marked-for-murder

UPDATE: Christi Jo disappearance, 32 years later | News | gothenburgleader.com

https://unsolved.com/gallery/christi-jo-nichols/