Potential primary source locations:
Although a documentary is a secondary source, they often contain primary source material.
Finding primary sources:
Within a search engine such as Google, put your person's name in quotes and then follow it with a type of primary source.
For example: “ted bundy” archives
Some primary source keywords:
Also consider adding site:.gov as part of your search string to search only government web sites.
For example: "Ted Bundy" letters site:.gov
The library has many excellent secondary sources that contain snippets of primary sources within them. In particular, we have many ebooks relating to serial killers.
Within OneSearch, try a search using your serial killer's full name or nickname surrounded in quotes. For example, "Dennis Rader", or "BTK serial killer"
The OneSearch search engine can be found under the "LRC Services" tab in MyCampus.