The New Brighton Archeological Society, by Mark Andrew Smith

Their parents lost during an expedition, four children are sent to an old manor house to live.  There, they uncover secrets their parents had kept and begin to pursue their legacy.

I found this story predictable, characters flat, and plot contrived.  All problems are solved too easily and with too little thought, as though no alternatives exist.  While children are less likely to be bothered by structural blandness, I'm unlikely to recommend this widely.  There are better stories available.