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Missouri

Governor Mike Kehoe, Republican

Quick Facts

Death Penalty Status
Yes
Death Row Population
8
Executions since 1976
102
Executions before 1976
285
Clemencies
4
Exonerations
4

State-by-State Issues in Context

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  • Women
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  • Executions Overview
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History of the Death Penalty

The death penal­ty was first used in Missouri in 1810 when Peter Johnson was hanged for mur­der. Missouri car­ried out a total of 285 exe­cu­tions from 1810 to 1965. Hanging was the pri­ma­ry method of exe­cu­tion until 1936, when lethal gas came into use from 1937 until 1987. Starting in 1987, lethal injec­tion was added as an option for inmates in addi­tion to lethal gas.

Timeline

1937 — Roscoe ​“Red” Jackson is exe­cut­ed by hang­ing in the last pub­lic exe­cu­tion in the United States.

1989 — In Wilkins v. Missouri, the U.S. Supreme Court finds that cap­i­tal pun­ish­ment imposed on a per­son for a crime com­mit­ted at 16 or 17 does not con­sti­tute cru­el and unusu­al pun­ish­ment under the 8th amend­ment. This deci­sion was reached in con­sol­i­da­tion with the case of Stanford v. Kentucky.

2001 — Missouri is the 16th state to ban the exe­cu­tion of pris­on­ers with intel­lec­tu­al dis­abil­i­ties. This bill is not retroac­tive for those cur­rent­ly on death row.

2003 — Joseph Amrine is exon­er­at­ed after spend­ing 17 years on death row.

2005 — In Roper v. Simmons, the U.S. Supreme Court rules that the exe­cu­tion of those under the age of 18 at the time of their crime is unconstitutional.

2007 — The Missouri leg­is­la­ture defeats a bill that would have made the death penal­ty a manda­to­ry sen­tence for those who mur­der law enforcement officers.

2011 — Governor Jay Nixon com­mutes the sen­tence of Richard Clay.

2012 — The Missouri Department of Corrections announces it is switch­ing from a three-drug lethal injec­tion pro­to­col to a sin­gle-drug method involv­ing Propofol. Missouri’s writ­ten pro­to­col does not require a physi­cian to be present on the execution team.

2012 — The United States’ main sup­pler of propo­fol announces it will not allow the drug to be sold for exe­cu­tions. Fresenius Kabi USA, a German-based com­pa­ny with offices in Illinois, will not accept orders for propo­fol from any depart­ments of jus­tice in the United States.

2014 — An inves­ti­ga­tion by St. Louis Public Radio and the St. Louis Beacon found that the source of Missouri’s lethal injec­tion drug, pen­to­bar­bi­tal, is a com­pound­ing phar­ma­cy in Oklahoma that is not licensed to sell drugs in Missouri.

2015 — Missouri car­ries out the exe­cu­tion of Cecil Clayton, a brain-dam­aged man with an IQ of 71, with­out a hear­ing to deter­mine his competency.

2016 — Cole County, Missouri Circuit Judge Jon Beetem rules that Missouri must release the names of phar­ma­cies that pro­vide drugs for lethal injection.

2018 — Missouri Judge Kelly Wayne Parker impos­es the death penal­ty on Marvin Rice, dis­re­gard­ing the near-unan­i­mous jury vote to spare his life. Four months lat­er, Missouri Judge Thomas Mountjoy sen­tences Craig Wood to death after a non-unan­i­mous jury vote.

2019 — In Bucklew v. Precythe, the U.S. Supreme Court holds that any chal­lenges to the state’s method of exe­cu­tion on the basis of exces­sive pain must include alter­na­tive meth­ods of exe­cu­tion that are less painful. The court affirm that the 8th Amendment does not guar­an­tee a pain­less death and only pun­ish­ments that ​“inten­si­fy the sen­tence of death” with a ​“super­ad­di­tion of ter­ror, pain, or dis­grace” can be clas­si­fied as cru­el and unusual.

2023 — Missouri car­ries out the first known exe­cu­tion of an open­ly trans­gen­der woman, Amber McLaughlin.

Famous Cases

Roper v. Simmons (2005): Christopher Simmons was 17 years old when he and two oth­er teenagers, broke into the home of Shirley Crook, kid­napped her, and pushed her off a bridge into the Meremac River. Simmons bragged about the mur­der to friends, and even­tu­al­ly con­fessed to police. He was con­vict­ed of the crime and sen­tenced to death. Simmons appealed the death sen­tence on the basis that he was only 17 years old at the time of the crime, and the exe­cu­tion of a juve­nile was cru­el and unusu­al pun­ish­ment in vio­la­tion of the Eighth Amendment. The Missouri Supreme Court ruled in favor of Simmons, over­turn­ing his death sen­tence and sen­tenc­ing him to life in prison with­out parole. The State of Missouri appealed the case to the U.S. Supreme Court. The Court ruled that exe­cu­tion of indi­vid­u­als who were under 18 at the time of their crime was uncon­sti­tu­tion­al. In its deci­sion, the Court not­ed a ​“nation­al con­sen­sus” against the prac­tice of exe­cut­ing juve­nile offend­ers; just 20 states allowed the juve­nile death penal­ty by statute, and only 3 had exe­cut­ed a juve­nile offend­er in the last 10 years.

Notable Exonerations

Joseph Amrine was serv­ing time for rob­bery and bur­glary in Missouri State Penitentiary when he was accused of stab­bing fel­low inmate Gary Barber, in 1986. No phys­i­cal evi­dence linked Amrine to the crime, and he was con­vict­ed pri­mar­i­ly based on tes­i­mo­ny from oth­er inmates and was sen­tenced to death. Amrine appealed his death sen­tence and the Missouri Surpreme Court found ​“clear and con­vinc­ing evi­dence of actu­al inno­cence.” Three inmates who had pre­vi­ous­ly tes­ti­fied recant­ed their state­ments, say­ing they lied in exchange for pro­tec­tion. Six oth­er inmates tes­ti­fied to see­ing Amrine play­ing cards at the time of the mur­der. The court ordered that Amrine be released with­in 30 days unless he was charged with anoth­er crime. Missouri pros­e­cu­tor Bill Tackett brought new mur­der charges on Amrine, but dropped the charges a month lat­er after DNA tests con­duct­ed on blood stains from the crime were incon­clu­sive. Amrine was freed in August 2003.

Notable Commutations/​Clemencies

Darrell Mease was con­vict­ed and sen­tenced to death for the mur­der of his for­mer drug part­ner, Lloyd Lawrence, Lawrence’s wife, and Lawrence’s grand­son. He was sched­uled to be exe­cut­ed in 1999. Pope John Paul II was vis­it­ing Missouri at the time and made a per­son­al plea to Governor Carnahan to grant Mease mer­cy. The day before Mease’s exe­cu­tion, Governor Carnahan grant­ed Mease clemen­cy, com­mut­ing his sen­tence to life without parole.

Jasper County Courthouse. Photo by Abe Ezekowitz.

Resources

  • American Bar Association Missouri Death Penalty Assessment Report
  • Department of Corrections
  • Missourians for Alternatives to the Death Penalty
  • Missouri Office of Prosecution Services
  • Public defend­er’s office
  • Victims’ ser­vices
  • Missouri Death Row
  • 2015 Annual Report from Missourians for Alternatives to the Death Penalty

Missouri Execution Totals Since 1976

News & Developments

Executions February 3, 2026 Restrictions on Spiritual Advisers in Execution Chambers Persist Despite Supreme Court Ruling Mental Illness November 4, 2025 Veterans in the Spotlight: In Service and in Struggle — The Story of One Veteran on Death Row Upcoming Executions October 14, 2025 Missouri Governor Denies Clemency for Lance Shockley Despite Broad Bipartisan Support for Commutation of His Death Sentence Executions October 8, 2025 Upcoming Executions Illustrate Persistent Themes and Concerns Around the Death Penalty Innocence August 1, 2025 Exoneree Sandra Hemme’s Case Reflects Broader Pattern of Opposition to Innocence Claims from Missouri Attorney General’s Office Intellectual Disability June 4, 2025 2025 Roundup of Death Penalty Related Legislation Representation April 15, 2025 United States Supreme Court Denies Review for Death-Sentenced Missouri Man Whose Jury Foreman Was Removed for Bias Mental Illness December 5, 2024 Hidden Casualties: Executions Harm Mental Health of Prison Staff
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