Ok, there's been a spanner thrown in the works by my husband who I've just shown the covers to on my laptop. He doesn't know the story. He spent a solid five minutes ranting about how bad the various versions of cover number 2 were - saying they were old fashioned, or looking like it was something to do with a Netflix David Attenborough climate change special. Then he asked 'who designed these anyway?' to which I replied, 'I did, dear.'
He said number 5 looked like a horror.
His fave was number 4, which he said looked like a supernatural story.
My dilemma is that even though he's not a fiction reader and you guys are, it is a supernatural story. But if number 2 attracts the most people, then that's what you want from a cover, right?