Fresh off FB marketplace, literally haven't even ridden her yet, but quite the looker!
Apparently 'Thin Blue LIne' was the house brand of Silent Sports in Thornhill, Ontario.
853 main tubes
Kinesis 6061 fork
Not sure of rear triangle but has Ritchey dropouts (edit - bike store says generic double butted as 853 was too stiff)
Ultegra groupset
Ritchey bars and seatpost
Selle Italia saddle
Custom paintjob by 'Karl's' of Toronto
Sunrim ME14A rims on Ultegra hubs, DT spokes, 'handbuilt by Wheeltech'
Edited to add: more info from the bike store: probably a custom build, welded in Toronto. Generic rear triangle. Last run of Thin Blue Line was 2000, so probably very late 90s.