I once read a book (Signalz, by F. Paul Wilson), where someone got transmitted power working, and it was part of ushering in eldritch dimension-dwellers. In tha

I once read a book (Signalz, by F. Paul Wilson), where someone got transmitted power working, and it was part of ushering in eldritch dimension-dwellers. In that book, Tesla was part of some kind of dark wizard cabal. Don’t remember, exactly. It was a while ago.