Offender profiling is an important investigative tool for the law enforcement in investigating serious crimes, among others homicide and attempted homicide. Two of the most important theories in discussing offender profiling, are the inductive and deductive profiling theories. None of these theories have though been validated, why evaluating them in relation to validity is of high importance. A total of 19 cases including 23 offenders of homicide and attempted homicide were identified after searching court documents in a city in Sweden. Information available to the police (sex and age of the victim, modus operandi and crime scene) was retrieved. The inductive and deductive theories were then applied to the information in each and one of the 19 cases identified, in order to profile the probable offender. These presumed profiles where then compared with the actual offender in each case, in order to evaluate the validity of the inductive and the deductive theories. In six of the cases the presumed profiles were fully correct, while they were partially correct in the rest. In no cases they were false. The inductive and deductive profiling theories are thus effective to use in order to profile an unknown offender.