On What Grounds is the first installment in Cleo Coyle's Coffeehouse Mystery Series . After ten years away from the historic Village Blend coffeehouse Claire Cosi is back as manager and part owner. On the day she is bringing her cat and the very last of her belongings to the furnished duplex above the shop Cleo finds the coffeehouse locked and her assistant manager unconscious at the foot of the basement stairs. The police come but call it an accident while Cleo has a gut feeling that is was more than that. While running the coffehouse and dealing with her ex-husband who is also the owner's son she looks for information that will prove it was anything but an accident.