Mamta Kafle Case: Bloodstain-Pattern Analyst on the Bedroom, the Bathtub & the Saw | Trial (Nov 2)

At the Naresh Bhatt murder trial in Manassas Park, Virginia (testimony from November 2, 2026), the Commonwealth calls bloodstain-pattern analyst Iris Dalley Graff — a private forensic consultant and former Oklahoma State Bureau of Investigation examiner — who is accepted as an expert in bloodstain pattern analysis. Graff explains how she guards against context and confirmation bias — analyzing the physical patterns before any theory of the case — and walks the jury through her nine-page report (Exhibits 423A and 423B). Her analysis of the upstairs bedroom and attached bathroom at the home: BlueStar/luminol revealed latent blood (invisible to the naked eye) on the carpet, and when the carpet was rolled up, a stain roughly 12 inches across had soaked through to the underside — blood that, in the context of the scene, came from above. She describes the pattern's position relative to the bed and concludes the bed was not in that location when the blood was deposited, discusses cast-off patterns consistent with a knife or a reciprocating saw used on a blood source, and a defect in the caulking at the base of the bathtub through which blood on the tile floor ran underneath the tub. On cross-examination, the defense draws out the limits of the discipline: Graff agrees she cannot say when the blood was deposited, how it got there, the sequence of events, or how much blood there was, and that a large part of the original pattern is simply gone. On redirect she testifies her conclusions would be the same regardless of which side had called her. Mamta Kafle Bhatt, a 28-year-old nurse and new mother, was last seen in late July 2024 and has never been found. ▶️ Full Naresh Bhatt trial coverage (playlist):    • The Disappearance of Mamta Kafle Bhatt   ⏱️ CHAPTERS 0:00 Iris Dalley Graff takes the stand — her background (OSBI, bloodstain courses, IABPA) 16:07 Tendered and accepted as an expert in bloodstain pattern analysis 20:05 Guarding against bias — context and confirmation bias 33:50 Her nine-page report is published (Exhibits 423A / 423B) 36:52 Walking the scene — the bedroom and attached bathroom 45:30 Latent blood soaked through to the underside of the carpet (~12 inches) 55:04 Cast-off — consistent with a knife or a reciprocating saw 56:56 Blood under the bathtub — the defect in the caulking 1:12:43 Direct ends; defense cross-examination begins 1:49:56 Cross: she can't say when, how, the sequence, or how much 2:03:25 Redirect: "the bed was not in that location when the blood was deposited" 2:04:32 "The same if the defense had called me" — excused 📌 THE CASE Naresh Bhatt, of Manassas Park, Virginia, is charged with first-degree murder and defiling a dead body in the death of his wife, Mamta Kafle Bhatt. She was last seen in July 2024; her body has never been recovered. He was indicted in December 2024, and his trial began in October 2026. 🎥 Source: Court TV courtroom pool feed, November 2, 2026. Shared for news reporting, commentary, and public interest in an open court proceeding. ⚖️ A criminal charge is an accusation. Naresh Bhatt is presumed innocent unless and until proven guilty. Bloodstain-pattern analysis addresses how patterns formed, not whose blood it is or who caused it; presumptive enhancement (BlueStar/luminol) is not a confirmatory test. For informational and educational purposes. #NareshBhatt #MamtaKafle #NareshBhattTrial #TrueCrime #CourtTV #Virginia #ManassasPark #MurderTrial #Forensics #BloodstainPattern