The Legend of Vampires. Diablerie

At the cardiology center, no one suspects that nurse Lia Bran is a three-hundred-year-old vampire. She is cheerful and kind-hearted, trying to lead an ordinary human life.
Her friend and colleague Marian also hides a secret: he is a man, but... has been living for over a hundred years. While Lia and Marian try to find the reasons for his long life, employees at the center start to die in strange ways.
The investigation is taken on by Alen Dandeville—a proud and haughty cardiac surgeon, the star of the hospital and a favorite of the management.
At first, Alen suspects Marian of the murders, but later he uncovers the secret of Lia's true nature and the existence of a legend called "Diablerie."

Only by uniting can Lia, Marian, and Alen unravel the terrifying tangled web of secrets.
Will they manage to find the real killer?

"The turn of events draws you in from the very first lines. The charismatic characters captivate with their sense of humor and all-consuming passion for each other. What is the manifestation of true love? What secrets does the distant past hold? You read with bated breath, trying to unravel the tangled web of intrigue and mystery." — Alina, author of the blog "Girl from the Pages of Books"