S1 E1, 00:51

Honestly, this show didn't even wait 60 seconds before sprinkling in some hidden treasures. Right in the opening, when we first begin to see shots of the house's interior, there is a man staring directly into the camera from under the stairs... and once you see him, it's freaking trippy!

S1 E1, 32:31

When Hugh comes in to wake up Steven on that fateful night, there appears to be something, or someone, standing behind him. It looks like an older man in a suit with his hands held in front of him. Is it just me? You be the judge.

S1 E1, 34:59

About two and a half minutes later, look to the right of the staircase as Hugh and Steven make a run for it out the front door. It's clear as day; they are not alone. Look closely and you'll see two figures, a man and a woman watching them leave.

S1 E1, 50:43

During the conversation when Olivia comes to Steven's defense about knowing the gospels, there is someone peering from behind the chest in the room behind Olivia. Perhaps the same man from under the stairs?

S1 E2, 04:14

"Is that Hill House?" No, Shirley, it's a dude in the bushes staring right at you. Run, girl, run!

S1 E2, 04:16

Now really Shirley, how could you have not seen her? In fact, about 30 seconds after we see this apparition in the background, during the same scene — at 04:48 — there are two more people peering in from the next room.

S1 E3, 09:52

When Theo finds Luke and Nelly curious about the dumbwaiter, there's a face peering that them through the door. These ghosts are starting to get creative.

S1 E3, 16:23

Well, it's no wonder Mrs. Dudley is scared, there's a man staring at them from behind a wall for Heaven's sake!

S1 E3, 18:27

I had to check and recheck this one, but trust me, it's legit. It looks like a woman standing alone in the dark. When Theo lets Luke ride in the dumbwaiter, she unintentionally sends him down instead of up. She frantically tries to bring him back up by pressing the buttons but she doesn't realize that there's a figure in the dinning room who could have lended a hand.

S1 E3, 28:29

When Theo is looking for the ladder to the basement, there is a man standing behind the glass door. Who is he? My guess is William Hill, the tall ghost with the bowler hat. In a later episode, Hugh finds his body in this unknown basement. In any case, you can see this ghost's hand and sleeve through the glass door and it's super, super creepy.

S1 E3, 29:15

Less than a minute later, we see someone creepily hanging out from behind the ladder. Maybe he was just waiting there for someone to come get him? By the look of his face, he must've been waiting a long time.

S1 E3, 38:22

Poor Theo. She can see the tragic inevitable fate of her mom, but can't see the creepy chick hanging out in the dining room. Smh.

S1 E3, 39:40

There's that creepy bald guy again.

S1 E3, 39:48

This one was hard to see so I magnified it for you, but you can go see it for yourself, it definitely checks out. There's a figure standing (and creepily staring) at Theo and Olivia as they talk about Theo's touch sensitivity.

S1 E3, 50:51

These ghosts sure are persistent. I'm beginning to think they're trying to sell something, and by the looks of Hugh and the kids running in the opposite direction, I'm guessing they're not interested.

S1 E4, 08:18

Uh, Luke? You just took someone's hat and I have a feeling he's going to want it back. Perhaps it's William Hill again?

S1 E4, 08:37

When Olivia gets dejavu, there's a figure standing in the background as Olivia tells Hugh her vision of the house.

S1 E4, 13:21

When Luke and Nelly decide to be their adorable, childlike selves and throw buttons down the call device on the dumbwaiter, they aren't alone. Check out the creeper in the window on the glass door behind them.

S1 E4, 14:24

OK, this one isn't exactly hidden and we are obviously meant to see it but, you may have missed it if you were texting while watching, for example (I missed it the first time around). Who is she? She's Hazel, a bedridden old woman Mrs. Dudley — aka Clara — cared for who died in the house, according to Insider. She is also Poppy's sister-in-law and William Hill's sister.

S1 E4, 14:31

When Luke runs down the stairs after being mistaken for Clara, there are two people, I mean ghosts, standing in the doorway to the right of the stairs.

S1 E5, 02:51

Oh. Em. Gee. The Crains better run because, that looks like the creepy doll from the movie, The Boy.

S1 E5, 21:55

When Nell gets framed for writing on the wall, I think we get a glimpse of the real culprit.

S1 E5, 23:09

Is it just me, or did Mr. Peeping Tom make his way out from under the piano?

S1 E6, 14:11

Again, not exactly very hidden but if you were looking away, you definitely would have missed this one. It's Nell — aka "the bent neck lady" — at her own funeral. Poor Nelly. My heart still breaks for her.

S1 E6, 19:41

During the storm, young Nell gets lost in the dark. If you're looking away, you'll miss grownup Nell standing in the doorway as the "bent neck lady"... perhaps trying to warn her younger self?

S1 E6, 42:10

OK Olivia, if you're so "sensitive," how do you not see Hazel on the bed? C'mon now.

S1 E7, 38:20

When Hugh gets all pissed off about the red door not opening, there is someone behind him watching.

S1 E7, 49:46

As Hugh discovers the body in the wall, he's not alone. That blonde chick keeps popping up to see what's up. Who is the body in the wall by the way? It's William Hill. Probably sealed himself up in there to get from his annoying wife, Poppy. Can't say I blame the guy.

S1 E7, 50:04

When the police come after Hugh discovers William Hill's body in the wall, there is someone peering in from behind the door. Not exactly sure why this ghost is trying to stay hidden, it's not like anyone notices them when they're standing right in plain sight anyway.

S1 E8, 06:44

We don't know it at the time, but the man fixing the grandfather clock is actually a ghost. Later in the episode, Hugh tells Steven that no one was hired to fix that clock. We also see him again in the next episode when Olivia walks by him on the stairs. What's interesting about this ghost is that Olivia can't see him, while Steven visibly notices him... letting him realize he did in fact see ghosts while living at Hill House.

S1 E9, 01:14

They just love to eavesdrop, don't they? These ghosts really need to learn how to mind their own business.

S1 E9, 08:13

When Shirley and Luke argue about letting Abigail borrow Shirley's clothes, there seems to be an unnoticed guest among them, clearly judging.

S1 E9, 35:56

To be honest, the look on this ghost's face is the exact look my dog gives me when I leave the house. Party's over.

S1 E10, 52:55

One last sneaky ghost spying on adult Steven as he learns what his poor dad actually went through, that night.