Deadly Greenhouse Gasses by Cynthia Hickey

Book 5 in the Shady Acres Mysteries series

She's in her greenhouse, minding her own business, when the next thing she knows she's lying on the ground looking up. Someone tried to poison her. Right after she vowed not to snoop into murders anymore. But this killer isn't like the others. This one is a friend with a dark past. A past interwoven with the death of Shelby's father five years ago. Come along as Shelby and her quirky group of friends and relatives work to outrace a killer and find justice.

Another great cozy mystery from Cynthia Hickey. 5* – Pat Peregrin