← Back to United States casesJoseph Sonié Allegedly Murdered by Mike Dixon and Dew Shepherd, Lubbock, Texas, United States
Case Summary
Joseph Sonié, a 57-year-old pathologist in Lubbock, Texas, was found dead on July 11, 2012, after being shot five times and stabbed eleven times. The source reports that his fiancée, Rachel Tina, had previously ended a relationship with plastic surgeon Mike Dixon, who allegedly became obsessed with her, stalked the couple, attempted to undermine their relationship, and later hired Dew Shepherd to attack Joseph. Shepherd initially implicated Dixon, later gave conflicting trial testimony, and received a life sentence without parole under a plea agreement. Dixon was convicted in 2016, his conviction was temporarily overturned on appeal, and the Texas Court of Criminal Appeals later reinstated the life sentence.
Basic Information
Country: United States
State/Province: Texas, United States
City/Region: Lubbock
Incident Type: Murder
Relationship Status: Engaged
Relationship Duration:
Affair / New-Partner Context
Recorded context: Romantic-rival / love-triangle context
Reported initiator: Unclear / not reported
Relationship timing: Before marriage / formal commitment
Incident Date: July 11, 2012
Incident Sequence and Additional Victims
Primary reported outcome: Homicide
Reported self-harm outcome: Attempted suicide; survived
Person(s) reported to have died by or attempted suicide: Dew Shepherd
Reported role: Alleged suspect / offender
Reported sequence: Homicide or serious injury, then suicide or attempt
Additional victims reported: 0
Relationship Journey
Relationship Origins:
- Met at school/college/university
- Friends circle
Relationship Stages:
- Dating
- Engaged
- Married Living Together
- Separated
Analysis
Contributing Factors:
- Cheating / Infidelity
- Financial Issues
- Domestic Conflict
- Love obsession
- Divorce / Separation
- Suspicion of infidelity
Red Flags:
- Secretive communication patterns
- Unusual closeness with a specific third person
- Deception after incident
- Escalation Pattern / Violence
- Secret affair
- Threats
- Stalking / Repeated Harassment
- Mental Health Deterioration / Hopelessness
Motives:
- Revenge
- Extramarital relationship
- Jealousy
- Desire for new relationship
- Eliminate romantic rival
Relationship Outcomes:
- Legal case ongoing
- Homicide before marriage
- Arrest made
- Investigation still ongoing
- Contract killing involved
- Suicide
Source Video
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People Link Graph
Joseph Sonié Allegedly Murdered by Mike Dixon and Dew Shepherd, Lubbock, Texas, United States
Relationship Journey Graph
Origin
- Met at school/college/university
- Friends circle
How the relationship or connection began.
Status
- Engaged
Stages
- Dating
- Engaged
- Married Living Together
- Separated
Important relationship phases recorded for this case.
Warning Signals
- Secretive communication patterns
- Unusual closeness with a specific third person
- Deception after incident
- Escalation Pattern / Violence
- Secret affair
- Threats
- Stalking / Repeated Harassment
- Mental Health Deterioration / Hopelessness
Reported red flags or early concern points.
Pressure Points
- Cheating / Infidelity
- Financial Issues
- Domestic Conflict
- Love obsession
- Divorce / Separation
- Suspicion of infidelity
- Revenge
- Extramarital relationship
- Jealousy
- Desire for new relationship
- Eliminate romantic rival
Contributing factors and possible motives from the available sources.
Incident
2012-07-11
Outcome
- Legal case ongoing
- Homicide before marriage
- Arrest made
- Investigation still ongoing
- Contract killing involved
- Suicide
Recorded relationship or case outcome.
AI Intelligence Assessment
Relationship Pattern
Romantic Triangle
Pattern Analysis
The reported pathway centers on a former romantic relationship that ended after pressure, control, and stalking allegations, followed by Rachel Tina's relationship and engagement with Joseph Sonié. The source alleges that Mike Dixon viewed Joseph as the obstacle to regaining Rachel and first used paid deception, letters, and surveillance before allegedly escalating to a contracted homicide. The case also involved conflicting accounts from the alleged hired assailant and later criminal proceedings.
Investigative Notes
A gardener discovered Joseph's body and contacted emergency services. Police reported five gunshot wounds and eleven stab wounds, a broken window, blood evidence, and a bottle apparently used as an improvised firearm silencer. The source says DNA from the bottle did not match Joseph and was not initially identified in police databases. Paul Reynolds then reported that his roommate Dew Shepherd had confessed and had attempted suicide. Shepherd implicated Mike Dixon, later entered a plea agreement, and received life imprisonment without parole. Dixon denied involvement, was convicted in 2016, obtained release after an appellate reversal, and later had the life sentence reinstated by the Texas Court of Criminal Appeals. The source's names and some details vary, including Mike/Mark Dixon and inconsistent references to Joseph's former wife and other women.
Investigation Confusion
Investigators initially considered jealousy involving several women reportedly connected to Joseph and questioned whether he had parallel relationships. Rachel's account initially did not connect the surveillance to Dixon. Shepherd first implicated Dixon but later testified that he acted alone and that the silver bars related to a business venture, creating a major conflict in the prosecution narrative. Shepherd also described the shooting as accidental while acknowledging repeated stabbing and failure to call emergency services. The source does not independently establish the reliability of every confession or account.
Case Reconstruction / Puzzle Pieces
Joseph met Rachel in a dance class and later became engaged to her after she moved to Lubbock to distance herself from Mike Dixon. According to the source, Dixon had previously divorced his wife for Rachel, pressured her to continue the relationship, and stalked her after she ended it. After Rachel rejected Dixon's proposal to resume an intimate relationship, she and Joseph reportedly noticed surveillance and unexplained communications. The source says Dixon and Dew Shepherd then arranged paid women, letters, and surveillance intended to separate the couple; when those efforts failed, Dixon allegedly offered Shepherd silver bars to kill Joseph. Joseph was shot in the house, remained alive long enough to reach the garage, and was then stabbed. Shepherd later attempted suicide and gave conflicting accounts, while police and prosecutors relied on his statements, communications, payment evidence, and other circumstantial evidence.
Risk Assessment
The source describes a high-risk escalation pattern involving an obsessive former partner, repeated unwanted contact, surveillance, an attempted relationship-replacement strategy, third-party paid harassment, access to a hired accomplice, and eventual lethal violence. The strongest reported warning signs were stalking, pressure to resume intimacy, monitoring of the couple, covert communications, and escalation from reputational attacks to an alleged murder plan. Responsibility and the precise intent behind some actions remained contested during the proceedings, although Dixon's conviction was ultimately reinstated according to the source.
Key Takeaways
The case illustrates how a former-partner conflict can progress from relationship pressure and unwanted contact to stalking, reputational manipulation, surveillance, third-party facilitation, and alleged contract violence. Early signals reportedly included repeated calls and letters, monitoring around the home, pressure to resume an intimate relationship, and refusal to accept separation. The case also demonstrates the importance of distinguishing witness claims, confession evidence, alibi evidence, plea agreements, trial testimony, and appellate outcomes.
AI Case Q&A
What early signals mattered most?
The most important reported early signals were Dixon's pressure on Rachel to continue the relationship, repeated stalking after separation, the couple's observation of surveillance near their home, repeated calls and messages, paid women portraying themselves as Joseph's mistresses, and letters intended to damage Rachel's trust in Joseph.
Which clues helped connect the case?
The reported clues included the broken window, the bottle used as an apparent improvised silencer, DNA and blood evidence, the absence of robbery, the surveillance reported by Rachel, the detailed information supplied by Paul Reynolds, Shepherd's confession, the alleged silver-bar payment, and phone or text communications discussed by investigators.
Which evidence types appeared strongest?
The source presents the physical scene, autopsy findings, DNA testing, Shepherd's statements, phone and text evidence, payment-related evidence, and testimony from Rachel, Paul Reynolds, and Shepherd as important evidence types. The DNA did not initially identify a person, and Shepherd's later contradictory testimony reduced the clarity of the evidentiary picture.
Witness / Eyewitness Statements
The gardener reportedly found the open door, signs of disorder, a bullet hole, and Joseph's body before calling emergency services. Neighbors reportedly said they saw and heard nothing. Rachel described stalking, a watcher near the house, and repeated calls and messages. Paul Reynolds reportedly told police that Shepherd had confessed and had provided details about the bottle silencer. Shepherd later gave conflicting accounts during the legal proceedings.
How did follow-up reports change the understanding?
The investigation initially focused on possible female contacts and jealousy involving Joseph. Later information from Paul Reynolds shifted attention to Dew Shepherd and an alleged plastic-surgeon accomplice. Shepherd's confession led to Dixon's arrest, but his later trial testimony contradicted his earlier account. The legal understanding changed again when Dixon's conviction was overturned on appeal and subsequently reinstated by the state's highest criminal court, according to the source.
What remained unclear?
The source leaves uncertainty about the precise reliability of Shepherd's changing accounts, whether the first shooting was truly accidental, the full role of Dixon in directing or financing the attack, and the identity or significance of the unidentified DNA sample. The source also contains inconsistent names and descriptions, including Mike/Mark Dixon and varying references to Joseph's former wife.