When most folks think of Newcastle, a few things probably spring to mind: the mighty River Tyne, broon ale, football fanatics in black and white stripes, and the occasional nightclub brawl courtesy of a certain reality TV show. But behind the party scenes, kebab shops and the shadow of St. James' Park lies a different breed of professional—quiet, discreet, and absolutely canny at what we do. Aye, we’re talking aboot private investigators in Newcastle.

When the phrase “the oldest profession”  is uttered, most people instinctively think of prostitution. It’s a well-worn assumption, often...