Goodreads asked C.S. Donnell:

Where did you get the idea for your most recent book?

C.S. Donnell Blood Will Tell. The search for a DNA match, I was adopted as a small child and only found my birth mother about 20 years ago. All kinds of ideas about the difference between genetic similarities and those brought about environment. DNA mysteries. Who are you really? Can you find out that you aren't who you thought you were?
These thoughts generated many ideas for stories, only one of which developed into Blood Will Tell.

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