Don't F**k With Cats: Hunting an Internet Killer is a 2019 true crime docuseries about an online manhunt. It is directed by Mark Lewis and was released on Netflix on December 18, 2019. The series chronicles events following a crowd-sourced amateur investigation into a series of animal cruelty acts committed by Canadian pornographic actor Luka Magnotta, culminating in his murder of Chinese international student Jun Lin. It was one of Netflix's Top 5 most-watched documentaries of 2019. Premise The three-part docuseries follows a group of amateur internet sleuths who launched a manhunt for Luka Magnotta after he gained international notoriety in 2010 for sharing a graphic video online of himself killing two kittens. Magnotta was later convicted for murdering Chinese international student Jun Lin in grisly circumstances in 2012. Early investigation The series started with Deanna Thompson, a data analyst for a casino in Las Vegas, and John Green, from Los Angeles. In 2010, a viral video called 1 boy 2 kittens was linked on Facebook and posted on YouTube. The viral video shows a man playing with two kittens before he puts them in a very tight vacuum seal bag and vacuums out the air, suffocating the kittens. Thompson and Green subsequently started a Facebook group to build evidence and find the perpetrator.