Senior Citizens in New Novels

Now that I have achieved the much wanted (ha ha) title of senior citizen I am finding some novels that have older main characters ranging in age from late fifties to age 100.
Here are a few I have read recently.

"Old Age Private Eye" by A.W. Blakely. The first in the Old Age Pensioner Investigations series about Stanley, a pensioner about 68 years old who is so bored in retirement that on a whim he posts a notice that he is a private investigator. He is amazed when he is hired for a job and finds he needs to hire help so he hires his daughter who is newly divorced and job hunting; the other team member is his trusty dog, Roobarb. The setting is "the heart of England."

"The Little Old Lady Who Broke All the Rules" by Catharina Ingelman-Sundberg. The first book in the League of Pensioners series, all the main characters use Zimmer frames or as we call them in the USA, walkers. The main gal, Martha is 79 and decides to begin a life of crime to free her from her home from the aged, which she compares to a prison. The setting is the Netherlands and she recruits four friends from the home where she lives to form a gang. They pull off some dramatic crimes, and attempt jewel, bank and art robberies. They are so inept sometimes they succeed. After all, who could believe these harmless oldies could steal priceless Impressionist paintings?

"A Man Called Ove" by Fredrik Backman
Ove is a curmudgeon, a widower with a short fuse and he is a mean and prejudiced neighbor to people trying to be helpful. I don't know why Ove is a mere 59 in this novel, he seems like 69 or older. Against his will he is befriended by the young couple who move next door. You will find humor, despair and hope here, and the novel deserves the description of "heart warming." The author is Swedish. I love this book and plan to read the others Backman wrote.

"The Hundred Year Old Man Who Climbed Out the Window and Disappeared" by Jonas Jonasson. Alan has no plan except to escape out a window in order to miss his 100 year birthday party at the retirement home. Wow, does he have adventures. He finds stolen money, there are murderous thugs chasing him, he meets a friendly elephant and makes friends along the way. The author is a Swedish journalist. I read that there is a sequel to this book and Alan is 101 in it.
Are there other books you can add to this list? Please add them in comments, I think we would all like to hear about more books featuring senior citizens.