An interesting setup with a varied cast of characters. Blame for the murder is cast towards the only member of the artistic group who is no longer in the residence having indicated that they would go on a walking holiday.
Pretty clearly they too were bumped off.
Marsh is touted as NZs Queen of Crime, somewhat akin to Agatha Christie and sure, that makes sense. I'm not sure her detective is quite as interesting as Poirot, but then I'm jumping into a series that was already well established, so it's a little hard to tell.
Certainly the Australian artist in the story provided a lot of cultural cringe for me and it probably would have been a better book without it. It's hard to tell how realistic the character was given it's over 80 years old, but it was very embarrassing. I'm rather sorry if she met someone like that in real life.
Enjoyable, would probably read another in the series at a later date.