Who would have thought that whodunit is really a word? I just looked on Wikipedia to see, and it has its own page.
Well, I am about a third of the way finished writing the sequel to Birdsongs and I finally figured out whodunit in the book. I thought I knew previously who the killer was, but I was not very excited with my idea and thought it would be too easy to figure out. The other night as I was writing it came to me.
The coolest thing about this is that my previous writing in the novel will not give it away since I didn’t even know! How cool is that?
I have set a deadline for the end of August to finish the book and this new idea will be a great motivating factor in getting my work accomplished. I am also toying with changing the name to Pushed to Death. I guess I have plenty of time to make that decision.

A whodunit or whodunnit (for "Who done [did] it?") is a complex, plot-driven variety of the detective story in which the puzzle is the main feature of interest. The reader or viewer is provided with clues from which the identity of the perpetrator of the crime may be deduced before the solution is revealed in the final pages of the book. The investigation is usually conducted by an eccentric amateur or semi-professional detective.