I want to say thanks to
@GraceG for helping me to figure out the name of Edward Zakrzewski. (Also
@MrsWatson and
@Harriet Vane for offering to help).
He is an example of a family annihilator who did not commit suicide.
He had no criminal history, yet murdered his wife and two children (ages 5 and 7). He then went on the run. Several months later, someone identified him from the program Unsolved Mysteries, and he turned himself in.
This case was completely overshadowed by the OJ Simpson case - the bodies were found the morning of June 13, 1994, just hours after the bodies of Nicole Brown Simpson and Ronald Goldman were found.
He is still on death row today.
You can read more about him
here