Sirhan Sirhan assassinated Senator Robert F. Kennedy in 1968 after a campaign speech. He is serving a life sentence at the Pleasant Valley State Prison in Coalinga, California. He has come up for parole 14 times and been denied.
Kristen Gilbert, also known as the Angel of Death, is a nurse who was found guilty of killing her patients at the Veterans Administration in Northampton, Massachusetts. She was convicted of three counts of first degree murder, one count of second degree murder, and two counts of attempted murder. She injected her patients with a substance that gave them a heart attack. She was given life in prison without the possibility of parole plus twenty years. She was transferred to a prison in Texas and is currently serving her sentence at the Carswell Federal Medical Center in Fort Worth, Texas. There is a book written about her titled Perfect Poison.
Scott Petersen was convicted of killing his pregnant wife and their unborn child in 2002. He was given the death sentence, which he is appealing, and is currently at San Quentin Prison in California on death row.
Charles Manson is the famous leader of the Manson family. He masterminded the Tate/LaBianca murders (Sharon Tate, the movie star) commited by his followers. He was found guilty of conspiracy to commit murder. Originally he was given the death sentence, but then it was commuted to life in prison when California got rid of the death sentence. He has come up for parole 11 times and has been denied each time. He is currently serving at the Corcoran State Prison in California.