The high-functioning sociopath turned into a full on new man blubber.
Nothing against the excellent Amanda Abingdon. And her entry at the start of series 3 was perfectly fine but Moffet / Gattis created a terrible noose for themselves at the end of series 3 with the ridiculous ‘international assassin’ backstory for Mary.
This clunky device to hammer home the grieving of a character which became briefly fashionable in 2016 really killed The Lying Detective.
We all love a nice cultural nod, the more subtle or hidden it is the more satisfying it is to the aloof viewer who can claim to have noticed it. Conversely the
Deus Ex Machina
Balance of Characters
The first 2 series especially had a beautiful balance between Sherlock & Watson centre stage, with a perfect amount of time for the brilliant support characters: Molly, Mycroft, Mrs Hudson, Lestrade, Anderson.