David Alexander Crowbar, Amy Flora, and others Disappearance Involving Liz (Shana Elizabeth), United States
This source-based behavioral analysis does not establish a clinical diagnosis, motive, or legal finding.
This case involves complex interpersonal dynamics marked by jealousy, mental health challenges, and manipulative behaviors. The central figures exhibit patterns of obsession, emotional instability, and escalating conflict culminating in disappearance and presumed homicide.
David's long-term relationship ended without marriage, leading to new relationships complicated by jealousy and possessiveness. Kerry's mental health issues and Liz's manipulative and obsessive behaviors created a toxic environment. The interplay of past and current partners, family members, and mental health struggles fueled escalating harassment and violence.
The pathway began with separation and new relationships, followed by stalking and impersonation, escalating to threats, harassment, and ultimately presumed murder. Police dismissal of early warning signs delayed intervention, allowing escalation.
Each entry separates the reported behavior or state from the analytical strength of the available narration.
| Behavior / construct | Person / subject | Detailed case context | Evidence |
|---|---|---|---|
| Jealousy Emotional state | Liz (Shana Elizabeth) SuspectHired Suspect/Offender |
Liz exhibited intense jealousy towards Kerry and Amy, leading her to impersonate Kerry, send threatening messages, and attempt to isolate David from other women. This jealousy fueled escalating harassment and violence. Context or trigger: David's new relationship with Kerry Reported expression: Sending threatening messages to David, Kerry, and Amy; impersonation and harassment |
Explicitly reported Confidence: High |
| Family opposition or interference Family dynamics | Nancy MotherMother of the victim |
Nancy, Kerry's mother, actively sought police intervention, expressed disbelief at dismissal of her daughter's disappearance, and experienced emotional distress over lack of progress. Context or trigger: Kerry's disappearance and police response Reported expression: Advocacy for Kerry, skepticism of police, emotional distress |
Explicitly reported Confidence: High |
| Emotional escalation Escalation | David Alexander Crowbar Victim |
David experienced emotional escalation marked by fear of being watched, guilt over Kerry's disappearance, and distress from ongoing harassment, leading to withdrawal from social interactions. Context or trigger: Receiving threatening messages and witnessing harassment Reported expression: Fear, guilt, distress, withdrawal |
Narrative-supported psychological state Confidence: Moderate |
| Coercive control Control dynamics | Liz (Shana Elizabeth) SuspectHired Suspect/Offender |
Liz's behaviors reflect coercive control tactics aimed at dominating David's social and romantic life, including threats to Liz and Amy, and manipulation of communications. Context or trigger: Attempts to isolate David and control relationships Reported expression: Jealousy-driven harassment, threats to rivals, manipulation |
Explicitly reported Confidence: High |
| Victim devaluation Cognitive pattern | Liz (Shana Elizabeth) SuspectHired Suspect/Offender |
Liz devalued Amy by accusing her falsely of impersonation and theft, attempting to shift blame and justify her own actions. Context or trigger: Accusations and framing of Amy Reported expression: False accusations, blame shifting |
Narrative-supported psychological state Confidence: High |
| Maladaptive coping Coping response | Kerry Forever |
Kerry's coping with bipolar disorder and relationship stress included erratic communication, withdrawal from work and family, and eventual disappearance. Context or trigger: Mental health struggles and relationship stress Reported expression: Erratic messaging, withdrawal from work and family Diagnosis reported by source: Bipolar disorder |
Explicitly reported Confidence: High |
| Rumination or fixation Cognitive pattern | Liz (Shana Elizabeth) SuspectHired Suspect/Offender |
Liz showed fixation on David and Kerry, spending extensive time sending messages and monitoring their activities, indicating obsessive rumination. Context or trigger: Obsession with David and Kerry Reported expression: Persistent messaging and stalking behaviors |
Narrative-supported psychological state Confidence: High |
| Help-seeking or disclosure Coping response | Nancy MotherMother of the victim |
Nancy actively sought help from police and communicated concerns about Kerry's mental health and disappearance, attempting to disclose risks and seek intervention. Context or trigger: Concern over Kerry's disappearance Reported expression: Reporting to police, seeking information |
Explicitly reported Confidence: High |
Select a stage to expand it; scroll horizontally to follow the full sequence.
David and Amy ended their 10-year relationship without marriage, leading David to seek new relationships.
David met Kerry at work and through a dating app, starting a brief relationship lasting about two weeks.
Kerry disappeared after sending erratic messages and blocking David, possibly influenced by bipolar disorder.
Liz impersonated Kerry, sending threatening messages to David, Amy, and others, escalating harassment.
Police conducted digital forensics, GPS tracking, and forensic analysis to gather evidence against Liz and clarify the case.
Liz was charged with murder and arson; trial proceedings included presentation of recovered evidence.
Arrows show the sequence described in the source narrative; they do not prove that one psychological state caused the next event.
Analysis is limited by reliance on reported facts without clinical diagnoses, incomplete information on mental health status, and absence of direct witness statements. The complexity of impersonation and digital manipulation complicates behavioral interpretation.