Hannah Penfold’s novella “Coven of Vampires” is set 150 years before “The Crimson Scar.” Dimitri Thunders, the main character, has a committed girlfriend, a loving family, and a bright future. But when the person he trusts the most betrays him, his life drastically changes. Dimitri now has to decide between taking retribution or accepting it. Fans of The Vampire Diaries will adore this bite-sized, fast-paced love tale.