On a deadline, so a short post for the authors who are just starting out on their career path. Publishing industry has some typical practices. Established writers view it as the cost of doing business.
1. Reoccurring Titles.
2. Reoccuring character names.
Happens all the time. Is not a cause for alarm, unless someone is really trying to write in your universe. For example, if that second book was about Kate Daniels, the magic mercenary, living in the world of magic waves and killing werewolves and vampires with her sword, it would be an issue.
3. One Star Reviews on Books That Haven’t Been Released (or gone to ARC).
Not linking anything, but Brandi has sent 60+ notices to pirate sites this Friday alone. Your book will be pirated. It’s up to you how much sleep to lose over it.
All of this is normal.
When to freak out:
If you find passages that are copied word for word from your books in another author’s book. This is plagiarism. You can shame them, take them to court, etc, but generally simply stating in public that something is plagiarized usually leads to a swift removal of the infringing material.
If you find a book under your name that you haven’t written. It may be a coincidence, but most likely a scam.
If you find any of your books for sale by someone else, meaning not you or your publisher.
In conclusion: it sucks when someone copies you. We had that happen, but in the end, imitation is rarely as good as the original. Writing is stressful enough as is. Try to stay sane.