Hii!
Yes, criminology is indeed a good career choice. You can either choose to become a lawyer expertised in criminology, enter into research field, become a scientist, become a criminologist, forensic expert, investigator etc.,
The field has a good scope in India as well as abroad. The salary can vary from INR 3-4 Lakhs per annum in the beginning and increase as per your experience.
Hope this helps.
Good luck!