2004 - convicted and sentenced to death.
Henry Lee Lucas Killed several people between 1975 and 1983.
Confessed to 600 murders but later recanted and claimed he had killed only three people.
The exact number of murders he committed may never be known.
Convicted of murdering his mother in 1960 and served 15 years.
Convicted of nine murders in 1985.
Lost an eye in childhood in a fight.
He was the only inmate ever spared from execution by then Texas Governor George W. Bush.
Bush claimed doubts about Lucas's guilt in the case for which he was to be executed.
Died in prison on March 11, 2001.
Charles Ng and Leonard Lake Killed 11 people in northern California between 1984 and 1985.
Tortured, killed, and buried the victims in their hideaway in Wilseyville, California.
Arrested for shoplifting in San Francisco. Police found bullets and a silencer in their car.
Lake killed himself with a cyanide pill at a police station.
Ng fled to Canada but was captured and extradited to the U.S. He was later found guilty of 11 murders in 1999 and sentenced to death.
Robert Pickton 2002 - Pickton is charged with 26 counts of murder after police found the bodies of young women on his Port Coquitman, British Columbia, pig farm.
His trial centered on six victims.
December 2007 - Is sentenced to six concurrent life sentences with no possibility of parole for 25 years.
Richard Ramirez, aka the Night Stalker Killed 13 people in southern California in 1984 and 1985.
A self-proclaimed devil worshipper, from El Paso, Texas.
Found his victims in quiet neighborhoods near freeways, and entered victims' houses through unlocked windows and doors.
After he was tied to the case through fingerprints, his photo was released. Citizens in East Los Angeles captured him.
Convicted of 13 murders and sentenced to death in 1989.
June 7, 2013 - Dies at age 53 of natural causes.
Dennis Rader, aka the BTK Strangler Wichita, Kansas serial killer active from 1977 through 1991, killing 10 people.