Monster

Tenma, a brilliant neurosurgeon with a promising future, risks his career to save the life of a critically wounded young boy. The boy, now a charismatic young man, reappears 9 years later in the midst of a string of unusual serial murders.

Monster is a 2004 drama mystery movie, starring Mamiko Noto, Liam O'Brien, Hidenobu Kiuchi. It holds an IMDb rating of 8.7/10 from 71,315 votes and runs 24m.