ABERFELDY, SCOTLAND – The recent conviction of David Campbell, a former gamekeeper found guilty of murdering ex-colleague Brian Low, has garnered unexpected attention from the Institute for Dual Personality Studies (IDPS). Researchers are reportedly 'gobsmacked' by the sheer efficiency of Campbell's alleged 'Jekyll and Hyde' metamorphosis.

“Usually, these transformations involve elaborate potions, full moons, or at least a dramatic monologue,” explained Dr. Evelyn Finch, Lead Behavioral Analyst at IDPS. “Mr. Campbell, however, appears to have simply… done it. No fuss, no muss. It’s a masterclass in understated villainy.”

The IDPS has launched a new research initiative, 'The Campbell Protocol,' to study individuals who can switch between 'amiable community member' and 'homicidal maniac' with what Dr. Finch described as 'the ease of changing a lightbulb.' Initial findings suggest a strong correlation with rural isolation and an abundance of camouflage clothing.

Local resident Agnes McTavish, 87, expressed mild disappointment. “Aye, he seemed a decent enough lad. Bit quiet. Never thought he had it in him. Honestly, I was hoping for more of a dramatic reveal, like in the films. A bit of lightning, perhaps?”

Authorities confirm Campbell is now serving a life sentence, though sources close to the IDPS suggest they are lobbying for a special 'observational wing' to further study his 'unflappable duality.'