Murderabilia
Murderabilia, also known as murderbilia, is a term identifying collectibles related to murders, murderers or other violent crimes, coined by Andy Kahan, director of the Houston Police Department's Crime Victims Office.
Collectibles
Buyers typically seek collectibles that are either artifacts used or owned by murderers and items (often artwork) created by them. According to crime writer Leigh Lundin, buyers may be interested in the macabre, but many believe such artifacts offer power and control.
Virtually anything once owned by mass murderers or serial killers can be marketed, such as vehicles, houses, and especially weapons used in crimes. Clothing is also in high demand, particularly clothes worn during crimes themselves.
Serial killer art
Killer art is defined as poetry or artwork created by mass murderers and serial killers while in prison. Often, this process is used as a therapy device, or for further understanding a particularly disturbed psyche, while in other instances it is purely a method of time spanning entertainment for imprisoned individuals. The artists vary dramatically in skill and themes covered.