Deadly Women Premiered ‘Twisted Minds’ on Investigation Discovery: Sylvia Seegrist, Christina Riggs, and Bobbie Sue Dudley Terrell (October 23, 2008)

1. Sylvia Seegrist

When a deranged mind of a Deadly Women snaps, there’s no telling when the killing will stop. -Twisted Minds, Deadly Women (S2, E3)

Date: October 30, 1985
Victims: Recife Cosmen, 2, Ernest Trout, 67, and Augusto Ferrara, 64 (she also injured 7 others in the shooting incident)
Location: Springfield Mall, Philadelphia, Pennsylvania
Circumstances: Sylvia dressed in fatigues began shooting at people in the Springfield Mall with a 22 caliber rifle; victims were diving behind racks of clothing and hiding in the backs of stores; store owners realized that it was a familiar face; Sylvia would go into the Springfield Mall and complain to store owners that the bright lights bothered her; she would also march up and down the hall in the mall; Sylvia was obsessed with the military and the Army discharged her early; the Army recognized that Sylvia was not right in her mind; she muttered to herself and used obscenities because Sylvia had schizophrenia; she couldn’t perceive reality for what it was; she responded to the negative voices in her head; she was diagnosed 10 years earlier but refused to take her medication; Sylvia’s mother tried to get her to take the medication but she wouldn’t; her delusional system involved military power and control over people; her history revealed the potential for violence; she had been working up to the violence at the mall for a long time; Sylvia was driven by paranoid schizophrenia, the delusions centered around the fact that one is being persecuted and people are after them; she was in and out of mental institutions for years and feared her mother wanted to send her back; she refused to take medication and was suspicious of the medication and anyone who wanted her to take it; she thought her family wanted to hurt her and was out to get her, she was fearful that they wanted to send her back to the hospital; to Sylvia, the shooting was a ticket to a better life in prison; for some reason she decided that the hospital was worse than prison and she would do something to get her to prison instead; thankfully someone in the mall walked up to her and took the gun from her thinking it was a prank; John Loufer was an accidental hero; once medicated again, Sylvia displayed remorse for her actions; she was angry that she was free to buy a gun despite her mental illness; but she checked “no” on the form and was able to purchase a gun with no problems whatsoever; Sylvia criticized her ability to buy a weapon and wrote to Congress, the President, etc telling them she should not have been allowed to buy the gun
Motive: Mental Illness (paranoid schizophrenia)
Disposition: Sylvia Seegrist, 24, was found guilty but mentally ill of 3 counts of murder and 7 counts of attempted murder; she received 3 life sentences

2. Christina Marie Riggs

When a deranged mind of a Deadly Women snaps, there’s no telling when the killing will stop. -Twisted Minds, Deadly Women (S2, E3)

Date: November 4, 1997
Victims: Justin Thomas, 5, and Shelby Alexis Riggs, 2
Location: Sherwood, Arkansas
Circumstances: Single mother Christina Riggs killed her own children; something snapped in her mind because she killed two defenseless children that didn’t know what was coming; Christina was going to kill her children with potassium chloride which she thought would stop their heart; what she didn’t understand is that a diluted form through IV would burn the skin and destroy the vein in the process; the potassium chloride binds and burns all of the blood vessels on the way to the heart; trouble followed Christina through her entire life; Christina was separated from her siblings and raised alone by her mother; in her diary, she wrote of sexual abuse by a neighbor and a family member; by 13, she was desperately unhappy and overweight; it was a psychological barrier for offenders; if I look unattractive, they won’t be interested in me; when she got older, she turned to sex because that’s all she knew; she got pregnant at 20 with her son Justin and his father skipped town; she married John Riggs and had another child Shelby but the marriage didn’t last; she was alone and raising the children by herself; she lost a cousin to suicide, her mother made a suicide attempt when she was growing up, and she had a grandmother who was institutionalized; potassium chloride is often used in prison executions; she thought she would give the children a quick and painless death but Justin was in pain and agony; she reached for another injection and tried to give him morphine; he was in so much pain and wiggling about that it was impossible for Christina to get the needle in the vein; Christina was a nurse known for always helping people; her sister wanted to know why she did this (filicide); her sister said she was great with her kids and worked long hours at the hospital to provide for her kids; after her divorce, she started another relationship but this guy broke her heart and stole her credit card; he left her broke and destitute; she told a doctor she was depressed and was prescribed Prozac; it was unclear if she was taking meds at the time of the homicide; the combination of mood swings, irritability and depression was the perfect storm; her plan to poison her two children failed so she resorted to suffocation and smothered both the children; she carefully laid their bodies on her bed and then tried to take her own life; she took 28 anti-depressants and injected herself with potassium chloride but it burned a hole and collapsed the vein; she decided to kill her children 2 days before she did it; she was afraid if she died, the children would be separated and go with their respective fathers, she thought she would prevent future sadness; 19 hours after the suicide attempt, Christina’s mom found her shortly before she died; Christina was demonized once the community learned what she had done; if she had died, nobody would have cared and would have wrote this off as another horrible tragedy; her sister hopes to shed light on the issue to help others learn from their experience; at trial, many discounted Christina’s state of mind and thought she wanted to rid herself of the children; in the end, the State of Arkansas finished what she started; Christina was obsessed with a black depression and didn’t want her children to live the same way
Motive: Mental Illness (depression)
Disposition: Christina Riggs, 26, was found guilty of two counts of first degree murder and sentenced to death by the State of Arkansas; she was executed by lethal injection (potassium chloride) on May 2, 2000

“There is no way words can express how sorry I am for taking the lives of my babies. Now I can be with my babies, as I always intended.” -Christina Marie Riggs (last words before execution)

3. Bobbie Sue Dudley Terrell

When a deranged mind of a Deadly Women snaps, there’s no telling when the killing will stop. -Twisted Minds, Deadly Women (S2, E3)

Date: November 1984
Victims: Aggie Marsh, 97, Stella Bradham, 85, Leathy McKnight, 85, and Mary Rae Carter, 79 (Anna Larsen, 94, was injected with insulin but rushed to the hospital and saved)
Location: North Horizon, St. Petersburg, Florida
Circumstances: In a 50 bed nursing facility, 12 people died in 13 days; Bobbie was an angel of death and killed her patients; she had an intense compulsion to murder because of what it did for her; Bobbie Sue had deep rooted psychological issues that surfaced after the investigation began; she used to mutilate herself to attract attention; she had Munchausen Syndrome by Proxy; she had a long history of self-harm; she had her ovaries removed, stomach tumors, a broken arm that wouldn’t heal, hysterectomy, gall bladder problems, ulcers and pneumonia; it brought her the attention she craved; she would faint in between surgeries; she craved attention so she hurt herself to get it; her mind was twisted at an early age because four of her siblings had muscular dystrophy so she didn’t get the attention she wanted; at a young age, she learned the way to get love and attention was to be sick; her life revolved around sickness; it lead her to a career in nursing; she saw the power her mother had taking care of sick children and she wanted that; her desire switched from harming herself to harming others; detectives found a common thread with each death; Bobbie Sue was working when they died; they learned she had a long history of harming herself for attention; somehow she got a license in nursing in 1975 despite being in and out of institutions for years in Illinois prior to her move to Florida; the victims in the nursing facility showed no signs of injury; the cops needed to substantiate their gut feelings; one of the individuals who died had several injection points and there seemed to be a trace of zync, maybe possible use of insulin; it’s used to help diabetic patients from becoming hypoglycemic; the use of insulin overdose would cause blood sugars to drop, stop the heart, and cause insulin death; Anna Larsen was sent to the hospital with insulin shock but she wasn’t a diabetic; someone injected the insulin and staffing records revealed Bobbie Sue was the common theme; cops investigated records and exhumed the bodies; they finally had enough to charge Bobbie Sue; they not only proved that she committed murder but they got a conviction; detectives believe that she probably has more victims that we don’t know about; Bobbie Sue died of an infection in prison on August 27, 2007
Motive: Mental Illness (Munchausen syndrome by proxy)
Disposition: Prosecutors wanted first degree murder charges for Bobbie Sue Dudley, 35, but she plead guilty to second degree murder in a plea bargain and was sentenced to 65 years in prison for 4 homicides; she also received 30 years for the attempted murder of Anna Larsen to be served concurrently with the 65 year sentence; the plea bargain locked her away for the rest of her life; she died of an infection in 2007

Jennifer S. Norris

Nature Lover, Environmentalist, Mental Health & Crime Victim Activist

Deadly Women Premiered ‘Twisted Minds’ on Investigation Discovery: Sylvia Seegrist, Christina Riggs, and Bobbie Sue Dudley Terrell (October 23, 2008)

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Nature Lover, Environmentalist, Mental Health & Crime Victim Activist

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