Victims' relatives applauded Wednesday when Franklin County District Judge Eric Godderz announced the sentences against 30-year-old Kyle Flack, of Ottawa.
Jurors convicted Flack of capital murder in the deaths of 21-year-old Kaylie Bailey and her daughter, Lana, at a farmhouse about 50 miles south of Kansas City.
They convicted him of first-degree murder in the death of 30-year-old Andrew Stout and second-degree murder in the death of 31-year-old Steven White.
Investigators believe Flack killed Stout around April 20, 2013, and killed the other three a little more than a week later.