Not a Creature was Stirring

First mystery in the Gregor DeMarkean series by Jane Haddam and the first book of hers I have read. I enjoyed the story which in addition to solving murders added a cast of characters from Gregor's Armenian neighborhood. I found it captured my attention throughout and I was surprised at the ending. The first person to be killed was the aging father of 7 children, all adults and dysfunctional in their own ways. My only criticism is that it was hard for me to keep track of who was who until their stories were more developed.