The Camp Clearwater Massacre

To help promote some of Roll20's new features DMDave has released a 80's slasher themed 5e adventure that uses them. For a limited time it is available with tokens and all for Roll20 at the fantastic cost of free. Going to be real though, I don't care about Roll20, but was excited to see that you can download the adventure in pdf format here.

The adventure is written for four 3rd-level characters and is designed like a Ravenloft domain. There's even mention of endless fog and eternal night that overtakes the camp while the slasher is active. The adventure can be ran multiple times and not feel stale. There are 8 separate player hooks. There are 10 unique origins that customize the slasher. Some of these use the stats presented and alter them others take pre-existing monsters and alter them. An important feature is that each variant has lore learned and a weakness, just like all the best slashers. The adventure features a variety of areas to explore, tasks to do, and random encounters. There are multiple ways to run npc's, which yet again, gives this adventure replayability. Being a Roll20 adventure, of course there are great battle maps. The adventure also includes two new magic items: the Magentan Sun-Saw and The Necronomicon. Additionally the adventure ends with stats for the undead version of the slasher and cult leaders. There's also rules for turning the mage stat block into a golemmancer. 

If you play 5e and enjoy horror (especially 80's slashers), you NEED to check this one out. You can try reskin standard D&D characters and use this as a one shot. It would also be appropriate for 5Evo: Terror In the Tunnels, though those characters are a bit weak for this. This would also be great for Dark Places & Demogorgons 5e, when it relaunches.