Crimes may be categorised into numerous crime types, arson, theft, or murder just to name a few. Different detectives are called to the crime scene depending on the type of crime. The detectives each specialise in their own respective fields, such as homicide, suicide or bombing. After the specialist detective is appointed by the senior investigating officer, it then becomes their job to take over the investigation and use their skills and experience to deduce what they can from the crime scene.

The basic outline of what they will have to undergo to solve the crime is simply find who committed it, details of when and how it happened and what evidence is there to prove the crime and the motive. (Be aware that the legal system uses the 'innocent until proven guilty' concept, meaning any suspect should be innocent until enough evidence suggests he/she is guilty.)

Below are definitions for some common crime types, which may be of reference for other parts of the site:

Burglary/Theft - Unauthorised entering of a dwelling or building to steal.

Arson - The intentional annihilation of a property by means of fire.

Fraud/Forgery - Deliberate deception via means of producing a false copy, or altering a true copy, of documentation, which is intended to be accepted as genuine.

Murder - Planned and illegal killing of another person.

Manslaughter - Unintentional killing of another person.

Kidnap - The abduction of a person against his will, often by unlawful force of fraud.