Image by Joshua Kopel , via Flickr Time was when I always met my deadlines, even when I was writing four books a year and had a part-time job. My latest 3 or 4 books have all been turned in late. My work-in-progress, the 24th Daisy Dalrymple mystery (Superfluous Women) was due June 1st. My editor will be happy if I get it to him by the end of July. We both have our fingers crossed. I have an excuse. I have multiple excuses. The most fundamental is the length of the series. After 21 books, I've run through a great many of the possible permutations of plot, character, motive, mode of death, and so on. One of the difficulties of a series such as Daisy's is finding new reasons for her to become involved in investigating murder, and ways to get her husband, DCI Alec Fletcher, on the case. The longer the series grows, the more my powers of invention and imagination are taxed. It takes time to come up with new variations. I've also slowed down for physical reasons. A ...