Strangest Cover Art 2021

We have a leading candidate for strangest cover art in 2021. It’s still early in the year so something may top this, but it will have to be pretty weird. I’d be more impressed if the index finger was balancing a whirling basketball, but that’s just me. Can anyone explain to me what the artist is trying to portray? Perhaps one has to read the book to find out, but somehow I suspect that may a fool’s errand — although Elly Griffiths is highly regarded as a mystery writer, so it may not be all that bad of an idea to read this standalone mystery.