Panzer and I took our daily trip into the catosphere and checked in at Margot Kinberg's blog Confessions of a Mystery Novelist and found an interesting post, "The Signature is There."
"The Signature" of the post's title is the author's stamp on her mystery fiction. The author stamp can be alphabet titles, nursery rhyme titles, etc. Margot provides plenty of examples from Agatha Christie through Sue Grafton and beyond.
Tootle on over to Confessions of a Mystery Novelist
and learn all about "The Signature."