Criminal investigation is a multifaceted discipline that generally includes subjects such as psychology, criminology, interrogation and cyber crime, to name a few topics. This field of study could lead to a variety of law enforcement career choices.

A master program may be offered in a variety of different fields, allowing students of almost any subject to enhance their knowledge and improve their credentials. This degree generally takes one to three years to obtain, although requirements may vary.

Part-time learning allows one to obtain a degree or qualification even if one cannot attend school on a full-time basis. One can learn at one's own pace, gradually accumulating credits that count towards a final qualification.