The cold heart vampire is not a book but a whole series of books. These book series have a total of 4 books. Its chronological order is:
1. The cold heart vampire and the slave
2. My human mate
3. My twin's mate
4. My guardian


Book1: - The cold heart vampire and the slave
Logan is a vampire prince who finds out her mate when he comes to select some maids from the servants who work under them. Many people tried to separate them by trying to kill her but she got saved every time. When Erica, his mate comes to knows about her true self her of her being the queen of all the creatures, her past comes to separate them.

Will they able to face all the troubles that god made them face and come out of it and have their happy ever after? and what will happen when she meets her long lost?

I will be uploading the whole series in this book. You will know when the first book ends and another book began as you continue reading the book.

The Cold Heart Vampire And The Slave

Erika let Mika take control of her body and guide me to that place where the mysterious room was, but this time there was no riddle in the wall like before. Fortunately, she remembered how to make the wall disappear from there. Erika removed the pin from her hair, inserted it in her finger, and then let the blood drop into the bowl. The cherry blossom on the wall started to glow brightly, and the wall disappeared in front of her eyes. 


 *The room was still the same as before; nothing had changed.* Erika thought as she walked into the hallway, and a door came in front of her. She opens the door and walks inside it. 


Book - II My human mate, Ch - 51 Finding Clarity in the Mysterious Room