If you have not read the first book in the series Zakolor and don't want any spoilers from book one, please don't read this review.
The Black Caladrius continues the story of Zakolor a nacusti tasked with eliminating the rot created by Zandorn. He hasn't forgiven his guardian for what he did to Olivia, and he will stop at nothing to find a cure. Kal is the worst for wear, fighting the dark magic he siphoned from Renna while strapped to a hospital bed due to his continuous fits.
Sorwin has taken Zakolor on as his apprentice, teaching him elemental magic. He has excelled at fire, but earth magic eludes him. During a meeting to help two cities agree on fishing in each other's territories. The league is ambushed during the meeting resulting in a high official being murdered. After speaking with Cerevita, Tansil, Olivia, and Zakolor are sent to find a cure for Olivia and bond Zak and Jolsu (his guardian). While trying to complete their near-impossible tasks, the dark magic wielders decide to visit them. The problem with fighting dark magic? The wielders always seem to be one step ahead.
The title "The Black Caladrius" is clever. I was halfway through the book before the dots connected. It's a fitting title for the last mission Zakolor takes on in the book. I couldn't stop reading once I started; it took me around 4 hours to finish. The author created a beautiful world when he introduced Valecium. Each character introduced fit well with each other, and every character placed was methodical. They were thought out, each at a pivotal moment in the story that needed them. The Black Caladrius is an originally well-written story that tells of magic, secrets, mysteries, darkness, dark magic, friendship, greed, & ancient lore. J.R. Douglas has done a phenomenal job writing the Nacusti Chronicles series and I can't wait for more.