April might be springtime in the northern hemisphere, but some of the best streaming services seem to think it’s the perfect time for a dry run of spooky season. How else to explain the arrival of some exquisitely dark slices of horror, like 28 Days Later: The Bone Temple arriving on Netflix, Weapons coming to Prime Video, or Shelby Oaks landing on Hulu? If you prefer your off-season Halloween viewing to be in the vein of campy B movies rather than serious scares though, horror specialist Shudder has you covered with Deathstalker , a gloriously cheesy reboot of a near-forgotten ’80s series. Reality is often scarier than fiction though, as shown by Louis Theroux’s Inside the Manosphere —his first documentary film with Netflix, exploring the dark side of social media and the world of toxic male influencers.…