By Sun and Candlelight is part of Sizemore's Primes Universe series. It takes place right after the book Dark Strangers. In fact, it carries on the story of Zoe Pappas and Matthia "Doc" Raven, the two main characters from Dark Strangers. I loved Dark Strangers and couldn't wait to read this novella. It was a cute story about what happened to them afterwards. You don't necessary have to read Dark Strangers to read By Sun and Candlelight, but you'd be missing something. If you've never tried Sizemore's Primes, give them a try. Good stories and characters. Happy reading!