Richard Charles "Chuck" Duncan was executed tonight...

Richard Charles "Chuck" Duncan was executed tonight for the Oct. 8, 1987 killings of John High, 71, and High's 73-year-old wife, Ruth. Testimony at his trial showed Duncan hoped to share the couple's $500,000 life insurance to save the failing computer business he ran with the couple's son, Gary. Duncan, 61, was pronounced dead at 6:21 p.m. Duncan becomes the 23rd convicted killer to receive lethal injection in Texas this year and the 63rd this year in the USA.