I'm going to laugh, even if it's a crime scene

“London. It’s like a great cesspool into which all kinds of criminals, agents, and drifters are irresistibly drained. Sometimes it’s not a question of who. It’s a question of who knows.”

“Don’t look so appalled, John. Or would you rather I feed from you instead– Oh… Now that is a rather interesting expression, isn’t it.”

• Hallowed Eve by EventHorizon (cute halloween costumes fic)
• The Halloween Party by XistentialAngst (the ‘for a case’ trope but with Halloween costumes and everyone being turned on by each other NICE)
• Master of Disguise by earlgreytea68 (Lestrade throwing a Halloween party, more cute costuming)
• Johnloctober by prettysailorsoldier (series of October-y drabbles, all VERY fluffy, all very sweet)
• The Master of Latham Hall by Kryptaria (cute ghost story)
• Skeletons by flawedamythyst (can’t really explain this fic without spoiling it, but basically an AU that you will very likely be familiar with and very Halloween-y)
• The Light in the Heart by cassyl (explaining how this is halloween appropriate spoils it but suffice to say John meets Sherlock at a hotel and things are spooky) 
• the shape of the shadows that detach from the walls by wendlaa (Sherlock is a ghost, and in the After you need a host. Luckily John is a very good host …if you know… wh at  i mean….)
• Sic Gorgiamus Allos Subjectatos Nunc series by etothepii (the Addams Family crossover, where John is an Addams)
• The Red Dianthus (THIS IS SO GAUCHE, but I wrote a case fic involving John and Sherlock getting handsy in a haunted house. the case is spooky, but the johnlock is fluffy)
• Bump in the Night by szm (Sherlock is a monster underneath John’s bed, very cute~)
• Breathe With The Soul by i_ship_an_armada (Se7en fic, which is a fairly disturbing film so it gets to be horror, epilogue is switchlock)
• Spectral Evidence by earlgreytea68 (the Sherlock accused of being witch in Salem MA , 1692)
• The Haunting of Sherlock Holmes by MapleleafCameo (Sherlock staying in a ~haunted house~ and trying to solve the 60 year old mystery of its old owner’s disappearance)
• A Study in [DATA EXPUNGED] by berlynn_wohl (John and Sherlock both work in a creepy creature lab of sorts, it seems gruesome but is in fact soft and sweet… read the sequel immediately after. )
• Rags and Bones by emungere (Sherlock keeping John’s hand after he dies so he can hold his hand ~ not as depressing as you think)
• They Mostly Come Out At Night by Tawabids - Aliens crossover (I think at this point everyone knows I’m in love with this fic??)
• Welcome to Silent Hill by Cleo2010 (Moriarty is holding John hostage in Silent Hill and Sherlock has to save him - for people who like Sadness, as in Sherlock loving John but thinking John doesn’t love him back, aka S3)
• Slender: However Improbable by philalethia (Post S2 fic with John grieving Sherlock, meanwhile Slender Man is stalking him - I was v impressed by how well the Slender Man mythos was integrated, also, pls play this game if you can handle jump scares)
• Upon the Midnight by kali_asleep (Sherlock hangs out in John’s nightmares, eating his fear & such)
• bonus: Trick or Tights by Sexxica ( this is khsfba John fucking Sherlock in a bee costume? this counts right)
• THE TRUE STAR OF THE SHOW: F'ing Pumpkin and Jolly Good Show (F'ing Pumpkin 2) our son sherlock done put his dick in a pumpkin