Because of stupid Agatha Raisin.
I only had a few chapters to go to finish the book so I had to stay in bed until I'd done so. But what I don't understand is why.
Have you read any Agatha Raisin books? You have plenty to choose from: there are at least 20 in the series. They've been amongst the NY Times bestsellers and, apparently, a radio series starring Penelope Keith has also been made. But they are so badly written!
Agatha herself is thoroughly unlikeable and almost as unbelievable as the stories of murder and mayhem in small Cotswold villages. They're written in a very bland 'this happened and then that happened' way, yet this is probably the fourth one I've read. The best I can say for them is that the plot is good - in a Midsomer Murder style. They're easy to read and it doesn't matter if you lose the thread.
But I really need a break from her now ...