You have read about a number of different types of serial offenders and mass murderers in this section. Unfortunately, there are too many for the book to adequately cover not to mention even more after this portion of the book was published. Based on your knowledge, the news or other reputable website or book, name/identify another type of multiple killer, describe what happened, explain their motivations and finally, identify what TYPE of killer they are.
While there are numerous websites, feel free to peruse these:
https://www.cnn.com/search/?text=serial+killers
https://www.huffingtonpost.com/2013/09/12/americas-most-notorious-criminals_n_3761487.html?utm_hp_ref=serial-killers
https://www.crimelibrary.com/serial_killers/index.html
https://twistedminds.creativescapism.com/serial-killers-introduction/spree-killers/