Cynthia Riggs: Martha's Vineyard Mysteries

Main Character: Victoria Trumbull, 92-year-old amateur sleuth
Setting: Martha's Vineyard
Bold type indicates a book I've read.

1. Deadly Nightshade (2001; see review)
2. The Cranefly Orchid Murders (2002)
3. The Cemetery Yew (2003)
4. Jack in the Pulpit (2004)
5. The Paperwhite Narcissus (2005)
6. Indian Pipes (2006)
7. Shooting Star (2007)
8. Death and Honesty (2009)
9. Touch-Me-Not (2010)
10. The Bee Balm Murders (2011) 
11. Poison Ivy (2012) 
12. Bloodroot (2016) 
13. Trumpet of Death (2017)