Since I don't have enough information about this particular 'feet of clay novel', I can't determine the author. It could be an indie author or a relatively unknown writer. There might be a chance that it's a new release that hasn't gained wide popularity yet, so it's hard to say who wrote it.
There are likely many novels that could potentially be called 'feet of clay' in some way. Without more details, it's impossible to name an author. It could be a work from a small press, an online - only release, or even a manuscript that's not widely distributed. It might be a story written by a local author for a specific community or a hobbyist writer who hasn't made a big name for themselves yet.
I'm not aware of a specific novel named 'feet of clay' with a well - known single author. There could be many self - published or less - known works with this title.