in order to 'set the scene' or explain something in the past.
it's very crap and annoying.
i also hate a random local dialect word dropped in here and there so we, the reader, are reminded they are from darkset glasgow, in case we forget.
then in the last 2 pages a sudden insane coincidence that is supposed to make us weep but really makes me want to hurl said tome out the window into the lake.