Poison Is Not Polite A Wells and Wong Mystery #2 by Robin Stevens

Daisy Wells and Hazel Wong are excited to spend spring break at Daisy's English mansion in 1935.  Then the rains come and a murder occurs.  Mr. Curtis, one of Mrs. Wells' "friends", is poisoned and the murderer is one of the guests and residents.  Daisy and Hazel, along with their friends Kitty and Beanie, try to discover clues and evidence to clear Mr. Wells' name.
I enjoyed reading this book set in a cozy, English countryside with interesting characters and a surprise ending.  The only reason I am not "highly recommending" it is because . . .
Warning: Mrs. Wells, Daisy's mom, seems to be having an affair with Mr. Curtis and the girls see the two exchange a passionate kiss.  It is also revealed later in the book that Mrs. Wells' continually has new boyfriends and Mr. Wells conveniently ignores this problem in their marriage.

There are a few more in the series and I will probably read and review them as I enjoy English mysteries.