I am a New York Times best-selling author of the Magic by the Numbers fantasy series. One Last Heist is planned to be published in December 2023 but will be available for preorder in September.

I meld my knowledge from a PhD in elementary particle physics with the fantasy of alchemy, sorcery, and wizardry to produce tales in which there are constraints and limitations. Magic is not omnipotent. When the protagonists are in a jam, they are not saved with a simple bibbity, bobbiity, boo.

With the exception that book 5, Magic Times Three, involves the same protagonists as book 4, The Archimage's Fourth Daughter, all the books in the series have different leading characters. They can be read in any order.

I have some experience with adventures in our universe as well -- orchestrating the classic Rose Bowl Card Stunt in 1962. https://en.wikipedia.org/wiki/Great_Rose_Bowl_Hoax

I have yet to come up with a plot in which a stamp collector saves the universe.