Maryland Supreme Court Clamps Down on Post-Conviction DNA Claims in Tarpley Case

**Maryland Court Slams Door on DNA Post-Conviction Loophole**

Maryland’s Supreme Court just crushed a convicted rapist’s bid for a new trial, ruling that chain-of-custody gripes over DNA evidence don’t qualify under the state’s post-conviction DNA testing law. Anthony Tarpley, serving 35 years for assaulting an 8-year-old, lost his appeal after trying to revive unpreserved trial arguments via statute. This sharp limits post-conviction relief, signaling courts won’t let procedural slip-ups become backdoor appeals—potentially chilling similar tactics nationwide.

The saga started in 2022 when Tarpley faced charges of second-degree rape and sexual offenses against his girlfriend’s granddaughter. A sexual assault kit yielded DNA swabs, but trial revealed a mystery perianal swab and a torn envelope, sparking Tarpley’s push to exclude the lab report. The judge admitted a redacted version; the jury convicted on most counts anyway. On direct appeal, judges tossed his chain-of-custody beef for lack of trial preservation. Undeterred, Tarpley filed under Maryland’s CP § 8-201 in late 2024, claiming “unreliable scientific identification evidence” from custody flaws. The circuit court denied it without a hearing; the Supreme Court affirmed, holding the statute covers only the scientific trustworthiness of DNA tests—not evidence handling or authentication lapses.

In plain terms, CP § 8-201 offers two paths post-conviction: fresh DNA testing on untouched evidence or challenging prior tests’ reliability due to flawed methods, like outdated tech. Tarpley picked the second but swung for chain-of-custody fences—arguing tampering made the kit fake— which courts deemed a trial-level admissibility fight, not statutory fodder. Substance trumps labels: no “substantial possibility” of acquittal without the evidence? Denied. Tarpley loses big; Maryland keeps its 35-year hammer down, and the statute stays narrow.

**Crypto-Market Impact Analysis:** Zilch. This state criminal procedural dust-up on rape conviction DNA rules touches zero crypto wires—no SEC overreach, no CFTC commodity tussles, no DeFi custody chills, no token classification shakes. Exchanges sleep easy; traders shrug. If anything, it whispers forensic chain-of-custody rigor to blockchain custody debates, but that’s a stretch—pure criminal law, not market mover.

Courts guard statutes like vaults; don’t bet on loopholes for second bites.