Decaffeinated Corpse by Cleo Coyle

Decaffeinated Corpse is the next book in the installment of the Coffeehouse Mysteries. Clara is back at her Village Blend Coffee House. Her ex-husband's, Matt, friend has created a decaffeinated coffee tree so that the beans from that tree is naturally decaffeinated and is not a processed decaffeinated bean. There is some who is after the plant it seems and out to ruin Matt's friend bu framing him for murder. But Clare knows things are not as they seem so she starts investigated the incidents that are not adding up to her. The murderer is revealed by the end of the story. Also Clare relationship with Detective Mike Quinn has started to go past them being just friends. It is going to be interesting to see how the relationship develops in future books.