Died in the Wool by Mary Kruger.
I bought, Knit Fast, Die Young, a while ago not realizing it was the second of Kruger's Knitting Mysteries. Oddly enough, Died in the Wool was only released last week. I'm usually a stickler for reading series in order, but it didn't make a huge difference in this case.
Both books are about Ariadne Evans, owner of a yarn shop ironically called Ariadne's Web. (Arachne was the weaver who angered Athena and was changed into a spider; Ariadne gave Thesus the ball of thread so that he could find his way out of the Minotaur's maze.)
One morning, Ariadne goes into her shop early to do paperwork, and finds the body of Edith Perry.
At first, Ariadne is suspected of the crime because it's assumed that very few people would be able to get into the locked store. But Edith was so universally disliked in the town that almost anyone could have killed her, especially when it's discovered that Ariadne's aunt has been giving keys to all sorts of people.
Concerned that she is the real target of the murderer, Ariadne joins forces with the town's new police detective to investigate.
A quick, enjoyable read, with some well-rounded main characters.