So being a Sarah j maas super fan i have also read throne of glass as well as the acotar series and i have a theory of a cross over bwtween the two. Ok so if you have read both series you know that the bone carver and the weaver had another sibling, koschei, and if you pay attention in ACOWAR you will notice that they say he was cursed to live in a lake on the continent. Now to relate that to TOG you would have to refer to heir of fire, and in that book there is a supposed monster that lives under the lake that tried to kill Aelin and Rowan . Coincidence, I think not...
Thoughts?