Harriet sets out to solve a poisoning on Marble Island in the third book in the acclaimed cozy mystery series from award-winning author Elana K. Arnold. There are some things you should know about Harriet Wermer: She used to lie a lot but not anymore.Seriously she only tells the truth now.Even though she hadnt wanted to come to Marble Island in the first place now she doesnt want to leave.Its the truth. With her mom and new baby brother home from the hospital its almost time for Harriet to pack up and head home from Marble Island and all the friends shes made. But Harriet doesnt have time to think about that--not when she discovers that Moneypenny her Nanus adorable basset hound has been poisoned! Harriet suspects the culprit is one of the guests staying at Nanus bed-and-breakfast and she and her best friend Clarence are once again on the case. But when someone else falls ill Harriets going to have to sleuth harder spy sneakier and be willing to see that sometimes the truth is more complicated than it seems.