Karan Dev Allegedly Murdered by Sushmita and Rahul Dev, Delhi, India
This source-based behavioral analysis does not establish a clinical diagnosis, motive, or legal finding.
The case details a premeditated homicide involving spousal murder facilitated by an extramarital relationship and financial motives. The perpetrator exhibited emotional detachment, multi-method assault planning, live consultation with a co-offender, and post-offense scene staging.
The marriage of 11 years experienced structural strain due to opposite work schedules (night shifts for the victim). Sushmita formed an extradyadic attachment with her cousin-in-law, culminating in a joint conspiracy to eliminate her spouse while retaining marital property.
The dynamic escalated from secret extradyadic communication to active murder plotting, chemical poisoning, live digital coaching during an ineffective attempt, lethal physical electrocution, and fraudulent post-offense grieving.
Each entry separates the reported behavior or state from the analytical strength of the available narration.
| Behavior / construct | Person / subject | Detailed case context | Evidence |
|---|---|---|---|
| Extradyadic attachment Attachment-related behavior | Sushmita SuspectWife of the victim |
Sushmita initiated an extramarital affair with her cousin-in-law after meeting regularly during family events. This secondary romantic attachment became the primary driver for planning her spouse's murder. Context or trigger: Opposite work schedules and routine contact during family functions Reported expression: Formed an emotional and romantic bond with her cousin-in-law Rahul Dev |
Explicitly reported Confidence: High |
| Premeditation and planning Planning or impulsivity | Sushmita SuspectWife of the victim |
Sushmita systematically planned the homicide for July 14, grinding 15 sleeping pills and distributing them across her husband's dinner to simulate a natural death in his sleep. Context or trigger: Desire to marry her lover without forfeiting marital property and money Reported expression: Procured sedatives, planned the murder date, and prepared poisoned food |
Explicitly reported Confidence: High |
| Co-offender facilitation Offender behavior | Rahul Dev SuspectCousin of the victim |
When the sleeping pills failed to end the victim's life, Rahul Dev actively coached Sushmita via Instagram live chat, instructing her to sever an extension wire, tape it to the victim, and turn on the power. Context or trigger: Failure of sedatives to kill the victim Reported expression: Provided real-time electronic instructions on electrocuting the victim using an extension cord |
Explicitly reported Confidence: High |
| Staging or evidence concealment Post-offense behavior | Sushmita SuspectWife of the victim |
After confirming her husband's death, Sushmita slept beside the corpse, disheveled her hair in the morning to act distressfully, and repeatedly petitioned the family and police against conducting an autopsy. Context or trigger: Immediate aftermath of the fatal electrocution Reported expression: Disheveled her appearance, feigned distress, and actively opposed a post-mortem examination |
Explicitly reported Confidence: High |
| Moral disengagement Cognitive pattern | Sushmita SuspectWife of the victim |
When confronted by her in-laws with written proof of her actions, Sushmita attempted to justify her behavior by raising grievances about financial control and claiming victimhood to minimize her culpability. Context or trigger: Family confrontation after chat logs were discovered Reported expression: Shifted blame to financial disagreements and claimed domestic distress during interrogation |
Narrative-supported psychological state Confidence: High |
| Multi-motive convergence Offender behavior | Sushmita SuspectWife of the victim |
Sushmita rejected divorce because it would mean leaving behind her husband's flat, savings, and assets. Her decision to commit murder resulted from converging motives of romantic desire and property gain. Context or trigger: Evaluation of separation versus spousal murder Reported expression: Combined romantic desire for her lover with financial greed for her husband's apartment and savings |
Narrative-supported psychological state Confidence: High |
Select a stage to expand it; scroll horizontally to follow the full sequence.
Shift-work schedule changes separated the couple's routine, enabling Sushmita to initiate a secret affair with her cousin-in-law, Rahul Dev.
Sushmita planned to eliminate her spouse on July 14, grinding 15 sedatives into his meal to produce an undetected death in sleep.
When sedatives failed, Sushmita messaged Rahul Dev, who instructed her on how to fatal electrocute her husband using an extension wire.
Sushmita feigned distress and opposed an autopsy, but the plot unravelled when open chat logs were discovered on an unencrypted phone in the bathroom.
Arrows show the sequence described in the source narrative; they do not prove that one psychological state caused the next event.
Analysis is based on journalistic true-crime reporting, public video clips, and recorded family confrontations. No direct clinical psychiatric assessment of the subjects is available.