Love is in the air when the Cthulhu cult converts its faithful into hideous flesh beasts. In Vienna, Hitler responds to an RSVP from something old. Lovecraft and Houdini find themselves neck-deep in something new. Sonia Greene is hunted for something borrowed. And after reconciling the possibility of never finding Earhart, Tesla is blue. “Tying the Knot” collects “Herald: Lovecraft & Tesla” issues 7-9.