Nicole Marie Speirs (November 3, 1983 – March 25, 2006) made headlines in the area of Tooele, Utah as a domestic violence murder victim.
On the night of Nicole's death, Smith reported that he found her dead in her home, drowned in her bathtub, after returning from a trip to Idaho.
According to police, Smith walked into a Veteran's Administration hospital building and confessed eight months after the fact.
As it was later revealed that Walter suffered from PTSD (Post-traumatic stress disorder) because of the six months he served in the Iraq War.
The case was covered by Investigation Discovery show Unraveled, an episode called Deadly Demons (S01E05).