Question: Were is the serial killer, that the Mothers of Murdered Offspring were instrumental in bringing to justice, being held ? 

Context articles: Cold Fish
Dexter (episode)
Mothers of Murdered Offspring
Evolutionary psychology of parenting
Bible John
Henry Louis Wallace
Oxytocin treatment for postpartum depression
Gary Ridgway
My Brother the Serial Killer
Long Island serial killer

Cold Fish (冷たい熱帯魚 , Tsumetai Nettaigyo ) is a 2010 Japanese horror-drama serial killer film directed by Sion Sono.
 The film is about a quiet and unambitious owner of a tropical fish shop whose life and family are taken over by a fellow fish entrepreneur who happens to be a serial killer.
 The film is loosely based on the exploits of two Tokyo serial killers, Sekine Gen and Hiroko Kazama, a husband and wife duo who owned a pet shop and murdered at least four people.
"Dexter", or "Pilot", is the pilot episode of the first season television drama series "Dexter", which premiered on October 1, 2006 on Showtime in the United States.
 The episode was written by developer James Manos, Jr. and directed by Michael Cuesta.
 It was based on the opening of the novel "Darkly Dreaming Dexter" by Jeff Lindsay.
 The pilot introduces the series' protagonist, Dexter Morgan (Michael C. Hall), a Miami Metro Police Department blood spatter analyst with a double life as a serial killer.
 While solving murders in the Homicide division, Dexter also spends his time hunting and killing murderers and criminals who have escaped the justice system.
 The pilot introduces the "Ice Truck Killer", a serial killer who targets prostitutes and leaves their bodies dismembered and bloodless, and the rivalry that develops between the killer and Dexter.
Mothers of Murdered Offspring (MoMO) is a victims' rights organization in Charlotte, N.C. It was founded in March 1993 by Dee Sumpter and Judy Williams after the death of their daughter and god-daughter, Shawna Denise Hawk, on February 19, 1993.
 Mothers of Murdered Offspring was conceived in 1993 as a support group for survivors, at a time when Mecklenburg County had the highest record year for homicides: a total of 129.
 They were instrumental in bringing serial killer Henry Louis Wallace to justice and of his eventual conviction as well as consoling the 11 murdered victims' families in addition to the families of murder victims since its inception.
Evolutionarily speaking, offspring have a greater bond to mothers than fathers; women are universally known to be the direct caregivers in a parent-offspring relationship, whereas males are seen as material resource providers or involved only with their own reproductive success.
 Women have the "maternal instinct" to aid, assist, embrace and invest in their offspring.
 Males are evolutionarily known to invest less due to paternal uncertainty and therefore seek as many sexual partners and seek for an increase of their genes amongst society.
 However, males also have a role in securing a connection with the offspring by taking part in making an offspring's decisions when involved in a household.
 The vast evolutionary differences between direct and indirect care provided by mothers and fathers, respectively, are therefore overlooked and both parents influence the life decisions of the offspring.
 Different parenting styles across cultures also influence the temperament of an offspring.
 Additionally, varying attachment styles can influence the development of an offspring, impacting their future choices on their own mates and parenting skills.
 Such parental influences lead to the theories of inclusive fitness as well as parental investment in illustrating the roots of parenting styles relayed upon offspring, such as to ensure the parents' reproductive success as well as their fitness through resources that which offspring obtain when making mating choices.
Bible John is the nickname of a serial killer who is believed to have murdered three young women after meeting them at the Barrowland Ballroom in Glasgow, Scotland, between 1968 and 1969.
 The killer has never been identified although the known movements and modus operandi of convicted Glaswegian serial killer Peter Tobin suggests that he may have been behind the killings.
 However, this has never been proven and the case remains unsolved.
Henry Louis Wallace (born November 4, 1965) is an American serial killer who killed 10 women in Charlotte, North Carolina, and is awaiting execution at Central Prison in Raleigh.
Oxytocin (OT) has potential to be a treatment for Postpartum Depression (PPD).
 Oxytocin is released when a mother cares for her child, making the interaction pleasurable.
 Mothers that report high levels of infant-mother bonding and demonstrate responsive and sensitive parenting generally show increased levels of OT and brain reward center activation during play sessions.
 According to Slattery and Neumann, the oxytocin system of mothers experiencing PPD may have altered activity.
 These mothers have trouble bonding with their infants when they are born.
 An experiment found that mothers, who have low attachment ratings to adults and their infants, also have lower levels of OT when caring for their children.
 It is thought that women experiencing PPD may benefit from intranasal OT because this treatment would help the mother feel happier and assist her in bonding with the child .
 Another experiment shows that administering OT to a mother sheep increases the amount of care that she gives to offspring .
 Further experimentation needs to be done in order to determine the effectiveness of OT as a treatment for Postpartum Depression.
Gary Leon Ridgway (born February 18, 1949) is an American serial killer known as the Green River Killer.
 He was initially convicted of 48 separate murders and is presumed to be responsible for more than 90.
 As part of his plea bargain, an additional conviction was added, bringing the total number of convictions to 49, making him the most prolific American serial killer in history according to confirmed murders.
 He murdered numerous women and girls in Washington State during the 1980s and 1990s.
My Brother the Serial Killer is a 2012 American television documentary about serial killer Glen Rogers, otherwise known as the "Casanova Killer", who was convicted for a series of murders and arsons.
 The documentary was narrated by Rogers' brother Clay Rogers and aired on Investigation Discovery in November 2012.
 "My Brother the Serial Killer" received widespread media attention for Clay's claims that his brother was responsible for the 1994 murders of Nicole Brown Simpson and Ronald Lyle Goldman.
Long Island serial killer (also referred to by media sources as the Gilgo Beach Killer or the Craigslist Ripper) is an unidentified suspected serial killer who is believed to have murdered 10 to 16 people associated with prostitution, over a period of nearly 20 years, and dumped their bodies along the Ocean Parkway, near the remote Long Island, New York beach towns of Gilgo Beach and Oak Beach in Suffolk County, and the area of Jones Beach State Park in Nassau County.