Driven to Kill

What happens when a young woman get murdered?
Who murdered her?
What did they want?

Janice Nelson is a 23 year old woman, fresh out of college. She has her life ahead of her. Without warning, all of that is taken away and gone in a flash when she is suddenly brutally murdered in her own home. The police work tirelessly to find her murderer with many questions running through their heads.

Is it her ex-boyfriend of two years with whom she had broken up with several days ago? Or is it someone else?
And why were they driven to kill Janice?