EntertainmentTVThriller ShowsSlow HorsesSlow Horses star teases Lord of the Rings' Hugo Weaving’s “scary” villain in season 4 of the Apple spy show: “That’s not the elf I know"When you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. EntertainmentTVThriller ShowsSlow HorsesSlow Horses star teases Lord of the Rings' Hugo Weaving’s “scary” villain in season 4 of the Apple spy show: “That’s not the elf I know"When you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. When you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. (Image credit: Apple TV+) Whilst the show has featured antagonists before, it has never had a traditional villain-type character like Weaving’s Harkness, who according to ourSlow Horses season 4 reviewis the series' “best threat to date” with “his mere …