Anyone know the statisics for a lone perp to abduct multiple victims and murder them within 24 hours? I'm not familiar with any of the cases mentioned except for the Groene case...and they were kept for a period of time. I'm sure it has probably happened, but I tend to believe it would be rather rare. Someone that brazen, unless they were acquaintances of the victims with probable trust involved is another bird altogether imo. {{{shivers}}}
I couldn't find any statistics that would directly respond to your question, but I found some statistics (I cut and pasted from different studies) that shows that 88.5% of kidnap/murder cases death occurs within 24 hrs (regardless of the # of perps)
Here's some more info if your interested....
The typical victims in the child abduction-murder cases were white girls, about 11 years old, often described as "normal kids" from middle-class neighborhoods with stable family relationships.
The typical abductors were white males, about 27 years old and unmarried. Half of them -- 51 percent -- lived either alone (17 percent) or with their parents (34 percent.) Half of them also were unemployed, and those who were employed worked in unskilled or semiskilled jobs.
Commonly, the killers had a legitimate reason to be at the site where they first contacted their child victims. Twenty-nine percent lived near the site, 19 percent were there for some normal social activity, and 18 percent either worked in the area or were there for some other business.
Most of the children abducted and murdered by strangers -- 57 percent -- were "victims of opportunity,". In nearly two-thirds of the cases, the abductions were "snatch and grab" confrontations where a killer saw an available victim and quickly assaulted and subdued her.
In only 14 percent of cases did the killer choose his victim because of some physical characteristic.
In the majority of cases -- 53 percent -- the initial contact between the victim and the killer took place within a quarter-mile of the victim's home. And in 33 percent of the cases, the first contact occurred less than 200 feet from the victim's home.
About 1 in 5 victims of nonfamily abductions (21 percent) and less than half the victims of
stereotypical kidnappings (48 percent) were abducted by multiple perpetrators.
7 percent of the stereotypical kidnapping victims were abducted by females. Perpetrators in their twenties were the main abductors of 36 percent of children who were stereotypically kidnapped.
Homes or yards were the origination point in only a minority of the abductions of all nonfamily abducted children (23 percent) and of those who were stereotypically kidnapped (19
percent) Instead, streets, parks or wooded areas, and other public areas (i.e., generally accessible spaces) were the places from which children were typically abducted.
While most of the nonfamily abducted children were moved or taken, 35 percent were detained in an isolated location for at least an hour. The majority of stereotypical kidnapping victims were detained in addition to being moved or taken.
When children were moved, the most common modes of conveyance were carrying the child, taking the child in a vehicle, and walking with the child. Most children were taken into vehicles (45 percent) or to the perpetrators home (28 percent). Fourteen percent of the stereotypically kidnapped children were moved more than 50 miles.
40 percent of stereotypical kidnapping victims were killed.
In 76 percent of the missing children homicide cases studied, the child was dead within three hours of the abductionand in 88.5 percent of the cases the child was dead within 24 hours.