The traditional Scottish score in Secret at Loch Ness is absolutely extraordinary, and an exceptional achievement in the adventure game. The music stayed with me, and as music will do, it inspired comforting feelings during the long tedium of non-play hours.
The voice acting for Cameron is just perfect - he's the kind of guy you want on your side in a crisis, and he comes out of the Sherlock Holmes tradition, by way of film noir. He's not beautiful in that Hollywood sort of way; but this is precisely his appeal, and you grow to like him immensely.
Motion capture technology was used in the production of Secret at Loch Ness, and the quality shows. The character motions and lip movements are realistic and make immersion very easy. The graphics are extremely detailed, and the worlds that you visit are compelling - the castle, its grounds, and the depths of the lake are all deeply absorbing.
The sound editing is integral to the solution of the mystery - you must listen carefully to distant sounds at times in order to determine what should draw your attention. However, I found that sometimes there were sounds which did not require my attention. I spent a lot of time chasing sounds because I thought sounds were consistently important throughout the game - but apparently not. Game worlds should establish and follow certain rules, but in this way Secret at Loch Ness falls just a little short.