Blood Betrayed, Forever in Debt Ep. 4

After losing her parents in an accident, Anna, the only daughter of a renowned medical family, leaned on her brothers Eddie and Evan until an orphaned girl named Tina entered their lives. Tina manipulated her way into the family, turning the brothers against Anna. Anna was cast out and dedicated herself in secret to completing her parents' cancer research. 12 years later, she returns as a brilliant scientist. Her brothers beg for forgiveness, but Anna has already made peace with the past.