At age seventy, Bunny Howard is determined to prove that she is just as useful as anyone else. Who knew it would be the new bookclub at Tides that would provide the opportunity? They are deep into a murder mystery, and Bunny has noticed that the strange behaviors of the Inn's mysterious guest are eerily similar to that of the killer in the book!

Sam Campbell lost the two things in life that were worth living for - his wife and his job as a police detective. If it wasn't for his dog, Dooley, he'd have no reason to get up in the morning... until he meets Bunny. He's sure she's up to something suspicious. Dusting off his detective skills to investigate her nefarious activities gives him a renewed zest for life.

Meanwhile, Claire is catering to her customer with dogs by baking up a new line of dog treats along with her famous pastries. Unfortunately, someone else in town has the same idea, and it's Claire's least favorite person, her ex-husband's new trophy wife.

Jane has something going on at Tides besides the mysterious guest. Mike is acting weird and Jane is worried... not that long ago, he mentioned something about their future. Is he ready to pop the question and does Jane want him to?