“48 Hours” Presents: A stepfather sits in prison for killing his wife. Her daughters vow to keep him there. Does he deserve parole? Correspondent Tracy Smith investigates Saturday, July 1 at 10 p.m. ET/PT on CBS.

Phonthip (Boonack) Ott, 33, disappeared from her home in California on May 17, 1992. A couple months later, Phonthip Ott’s dead body was discovered in the Sacramento River near Sacramento. Phonthips body was stuffed in a large nylon duffle bag about 5 feet tall. It was held down with H-shaped cement anchors. The day their mother disappeared, Phonthip’s daughters, Tippy Dhaliwal, 14, and Jeanette Marine, 10, spent the day with their grandparents. Upon their return home, the two girls sensed something was wrong when their mother wasn’t home and immediately suspected their stepfather of killing her. Dennis Ott was an active duty petty officer in the U.S. Coast Guard and his relationship with Phonthip was tumultuous. Read more from Military Justice for All here.

Related Links:
’48 Hours’ Sneak Peek
Sneak peek: Crime & Punishment | 48 Hours
Ott case: Sheriff zeroes in on a murder suspect | 48 Hours
Notebook: The possibility of parole | 48 Hours
Murder victim’s daughters share their emotional journey | 48 Hours
Remembering Phonthip Ott | 48 Hours
The possibility of parole: “48 Hours” examines life after a murder verdict
Ott murder: Crime & Punishment | 48 Hours (website)
California Sisters: Keep our mom’s killer behind bars!
Phonthip Boonack, Dennis Ott: ’48 Hours’ Reels In Case Of Missing Mother Found Dead In California River
‘He deserves to rot in prison’: Sisters fight to keep their mother’s killer behind bars as he comes up for parole 25 years after the victim’s body was pulled from a river in a weighted duffel bag
Phonthip Ott Discovered Dead in California River; Spouse Dennis Ott, US Coast Guard, Convicted of Murder and Sentenced to Life in Prison (1992)