I gave up about a third of the way through when I realized I didn't really want to pick it up again. You never get to know the victim, who is killed right at the beginning. I wanted to read this because it was supposedly a locked-room mystery. But one of the suspects has a key to the room, as does the cleaning staff, so it's not really that type of puzzle. Writing style was OK, but nothing much happens for 70 pages except people discussing how terrible everyone must feel about the victim being killed.
Very typical of Mignon Eberhart. I love her Agatha Christie-like mysteries.