3 Biography Joubert’s parents divorced when John was six years old Joubert went to live with his mother in Lawrence, MassachusettsJoubert was not allowed to visit his father and grew to hate his controlling mother.
4 Biography His mother moved him to Portland, Maine in 1974. When Joubert was 13, he stabbed a young girl with a pencil and felt sexually stimulated when she cried in pain.The next day, he took a razor blade and slashed another girl as he biked past her.In another incident, he beat and nearly strangled another boy. He relished the power of bullying, and began to stab or slash others.
5 History of MurdersThree victims were known to have been murdered by John JoubertDanny Joe EberleRicky StetsonChristopher Walden
6 Ricky Stetson Went missing from Portland, Maine on August 22, 1982 11 Years oldBody found the next day on the side of I-295
7 Clues from the bodyThe attacker appeared to have attempted to undress him.Attacker appeared to have stabbed and strangled himBite mark found on the body of Ricky StetsonSuspect arrested and held for a year and a half, released when they finally realized his teeth did not match the bite marks on Stetson
8 Teeth Marks and Star Pattern Joubert bit his victims and tried to disguise the teeth marks by carving a star pattern above the marksAnalysis of teeth marks is done by:Taking accurate casts of the suspect’s teethExcising the skin with the bite mark from the victim (only of the victim is dead)Observe for whorls, indentations, chips, abrasions, striations, distances between cuspids, tooth width and thickness, alignment and mouth arch.
9 Christopher WaldenDisappeared on January 11th 1984 in Papillion, Nebraska3 miles from Eberle’s bodyWitnesses saw white man in tan car
10 Clues from the body Walden’s body found stripped to his underwear Throat cut so deep that Walden was nearly decapitatedWalden’s body seemed to have been concealed better than the previous
11 EvidenceTwo sets of footprints were found leading to Christopher Walden’s bodyOne set of footprints lead away from Walden’s bodyNo struggle was shown and this lead FBI to believe that the killer was involved with Walden in some wayStruggle would have showed dragged footprints in the woodsClean footprints indicated no struggle
12 FootprintsJoubert left footprints at the site where Christopher Walden’s body was foundWhile footprints are circumstantial, they can tell a lot about a person. For instanceheight, sex, anatomic deformities, and if they were walking, running, or carrying something. British Police are currently working on a system to identify criminals by footprintsTreadmark Footprint Analyser
13 Footprints Cont’d Footprints are analyze by Using special lighting such as oblique lighting to identify footprint indentations if they are not clearly visibleForensic scientists will then cast the print, the same way they would cast the teeth to identify bite marksOnce they have a comparative source they can look for similarities to tie a suspect to a crime
14 WitnessUnknown female witness was put under hypnosis to help remember what she had seenWoman saw a young man walking toward a tan sedan prior to abductionWoman described the stranger as being of similar build to the victim and wearing a woolen hat pulled downWoman noticed the first couple of letters from license plate
15 Danny Joe EberleDelivering newspapers on Sunday, September 18th 1983 in Bellevue NebraskaBrother had not seen him but remembered being followed by a white man in a tan car on previous daysDanny delivered 3 newspapers, at the 4th stop his bicycle and newspapers were found, no apparent struggle
16 Clues from the body Body found 4 miles from the bicycle Stripped down to his underwearFeet and hands bound with rope and mouth taped with surgical tapeStabbed 9 timesFBI called in because of kidnapping
17 The Rope Was braided with several colors not found in local stores The rope found with the body was made of several different colored yarns and had an unusual constructionUsed comparative microscopy to examine the ropeYarn used to make rope is twisted in a very specific way
18 Worldwide search for rope Every manufacturer in the united states was checkedGovernment and military outlets abroad checkedFBI field conducted inquiries in the Far east where much of the world’s rope is madeEvery lead fizzled out
19 HairFound Hair on Danny Joe’s body that seem to be from a different sourceOnce they had a comparative source (hair from the suspect) they could have analyzed the hair with:Light Microscopy to analyze similarities and differences in hairCompound MicroscopeComparison microscope which allows observation of two things in the same field
20 Hair Cont’d They could look for differences in: The scale pattern of the cuticlesThe pigmentation of the cortexThe medulla patternswww. Komazacare.com
21 Individualizing evidence Rope used to bind Danny Joe seemed to offer the best chance of a leadThe more unusual the rope, the more useful it is as evidenceRope used to bind Danny Joe was so unusual that no one recognized it
22 Events leading to Capture On January 11, 1984 Barbara Weaver who ran a Bellavue day-care center noticed a young man in a car slowly cruising the street outsideShe made note of the car’s license plateThe driver saw her do this and stopped, he demanded that she give him the paper and when she refused he threatened to kill her, then roared off.Within seconds she phoned the police.
23 Events leading to capture…Part 2 Vehicle was traced to a local Chevrolet dealership, they learned the car was on lease to an enlisted airman at Offutt while his vehicle was being repairedHis vehicle, a cream-colored sedan which matched the first description exactly even down to the license plate seen by the woman under hypnosis
24 FBI evidence tied Joubert to 2 murders In a duffel bag belonging to Joubert, officers found a hunting knife and a length of rope.FBI laboratory technicians compared the rope found in Joubert’s quarters with that used to bind Danny Joe EberleTeeth marks from Ricky Stetson’s body matched Joubert’s teeth
25 Trials and AppealsAfter initially pleading not guilty, he changed his plea to guiltyJoubert Confessed to killing the two Nebraska boys.Several psychiatric evaluations were performed on JoubertOne characterized him as having obsessive- compulsive disorder and sadistic tendencies, and suffering from schizoid personality disorder.Joubert filed a writ of habeas corpus to the United States federal courts over the death sentences.
26 SentencingThe state of Nebraska appealed to the United States District Court for the District of Nebraska, which overturned the appealJoubert was executed on July 17, 1996 by the state of Nebraska with the electric Chair.
27 Further Analysis This case was based on strong circumstantial evidence Had DNA been developed they…Could have gotten DNA from the bite marks on the victims and compared it definitively to the suspect.Could have done DNA analysis of the hairs found on the bodySince Joubert was an enlisted man samples of his DNA would have been in army databases and comparative DNA analysis might have saved some of the victims.