Storyloom/Heart's Blood

Heart's Blood is one of the books by Pixelberry from the app Storyloom.

Summary
''Ten years ago, Sierra Cho was attacked by a mysterious assailant--a woman of inhuman beauty and terrifying ferocity. That violent night changed her life. It left her in the hospital with a wound on her neck, weak from loss of blood. It also drove her to pursue a career as a police detective. Now the hunt for a vicious serial killer has put Sierra on a collision path with her attacker. The woman from her nightmares... but also her dreams.''

Chapter 1: Shadows from the Past
"The past and present collide when your first case as a police detective brings you face-to-face with the mesmerizing woman who once tried to kill you."

Chapter 2: Deadly Doubts
"Your confidence is shaken after you encounter the woman who left you bleeding and broken ten years ago -- and you find she still has some control over you."

Chapter 3: What Happened That Night?
"The recent killings motivate you to investigate your own attack. What you find only raises more questions about that night."

Chapter 4: Dangerous Rendezvous
"A nighttime assignation with Aniya provides an opportunity to question the woman who's haunted you for years."

Chapter 5: Another Body
"The Dumpster Killer strikes again. While you search for answers, your relationship with Aniya ratchets up to a new level of danger."

Chapter 6: Imprisoned
"Kept captive in Aniya's remote mansion, you have to confront her true nature."

Chapter 7: Hunted
"Aniya becomes more dangerous as she grows desperate. Isolated in the woods, will you trust her? And what will it cost if you do?"

Chapter 8: Cursed Love
"Your search for a serial killer reveals new clues, while you finally learn Aniya's own dark history."

Chapter 9: What's a Life Worth?
"Aniya confesses her feelings, but what will you do in response?"

Chapter 10: Unhealthy Appetites
"You and Aniya continue to search for a way for her to survive without killing. Meanwhile, a break in your case leads you in an unexpected direction."

Chapter 11: No Kindness for Killers
"Your relationship with Aniya and your work as a police detective collide -- putting both in jeopardy."

Chapter 12: Corrupt Collusion
"Blake is dead, but you find evidence of deeper corruption. Who can you count on, and which of your relationships will fracture irrevocably?"

Chapter 13: The Price of Passion
"To stay with Aniya, you'll have to walk away from everything else. Can you give up the life you've known? Do you want to?"