That's how I started reading the Martha Vineyard series by Philip R. Craig too. He's now co-written a couple books with William G. Tapply which featured both of their detectives with a third one coming out, hopefully, next year!
Anyone else had a series lead directly to another like that?
It really is a small world after all. I was reading a post from aprilhenry in which she mentions her friend Barbara Seranella, whose book we just happen to be reading for whodundidit this month.