Fair warning: if (like me) you're the type of person who gets spooked easily, you may want to look away now. The following Twitter thread is genuinely creepy.

New York-based illustrator and author Adam Ellis has been tweeting about his apparently haunted apartment for awhile now.

It started with a series of dreams about a dead child, and it has quickly escalated to strange noises, unexplained animal behaviour and a series of events that are like something straight out of Paranormal Activity.

You can get fully caught up here:

I made a Storify of all my Dear David threads for easier viewing. I'll keep it up to date. https://t.co/NcZm0ZXXTJ — Adam Ellis (@moby_dickhead) August 16, 2017

Anyway, there have been some further developments.

Over the past few days, Elllis shared two more threads — complete with some very creepy video footage — to update his followers on the "Dear David" situation.

Here's the full update, in order...

There have been a few small developments in my apartment, but I'm not really sure what to make of them. I just know I'm scared. (thread) — Adam Ellis (@moby_dickhead) August 26, 2017

If you recall, my cats usually gather at the door at midnight, but lately it's been getting earlier and earlier every night. — Adam Ellis (@moby_dickhead) August 26, 2017

I was almost used to routine, so when they started to cry at the door closer to 10 pm, I was confused. — Adam Ellis (@moby_dickhead) August 26, 2017

They began a new routine: hover around the door at 10 pm, cry for about 15 minutes, then wander off as if nothing's wrong. — Adam Ellis (@moby_dickhead) August 26, 2017

But this week, something else has been happening. — Adam Ellis (@moby_dickhead) August 26, 2017

Shortly after the usual cat stuff, around 10:30 or so, I start getting phone calls from an unmarked number. — Adam Ellis (@moby_dickhead) August 26, 2017

My entire call history for the past week looks like this. You'll notice that I answered once, yesterday. pic.twitter.com/nozoMffWHs — Adam Ellis (@moby_dickhead) August 26, 2017

Since this has been happening for days on end, I thought it might be an automated telemarketer or something. — Adam Ellis (@moby_dickhead) August 26, 2017

Usually if it's an automated thing, if you answer once, they quit calling. So I picked up. — Adam Ellis (@moby_dickhead) August 26, 2017

I didn't say anything. I just listened, waiting for some automated message to chime in. — Adam Ellis (@moby_dickhead) August 26, 2017

Instead, what I heard on the other end was a peculiar electrical static sound, very similar the the static my sleep app picks up at night. — Adam Ellis (@moby_dickhead) August 26, 2017

After about a minute, the static stopped, and there was silence. — Adam Ellis (@moby_dickhead) August 26, 2017

I kept listening. I heard what I thought was breathing, but it was so faint I can't be sure. My heart was racing, so it was hard to hear. — Adam Ellis (@moby_dickhead) August 26, 2017

Then, just as I was about to hang up, I heard a very small voice whisper, "hello." — Adam Ellis (@moby_dickhead) August 26, 2017

Something about the way they said hello freaked me out. It wasn't a question, or a greeting. — Adam Ellis (@moby_dickhead) August 26, 2017

Just, "hello." A flat statement. So quiet I could barely hear it. — Adam Ellis (@moby_dickhead) August 26, 2017

I panicked and hung up. I didn't know what else to do. I closed all the curtains in my apartment and turned on every single light. — Adam Ellis (@moby_dickhead) August 26, 2017

I watched TV until dawn because I was too scared to go to sleep. I sort of feel like I'm losing my mind. — Adam Ellis (@moby_dickhead) August 26, 2017

If I look at each individual incident on its own, there are perfectly logical explanations for everything. — Adam Ellis (@moby_dickhead) August 26, 2017

But after three weeks of weird shit happening, I don't know how to make sense of it all. — Adam Ellis (@moby_dickhead) August 26, 2017

The only thing I feel like I can do right now is write everything down. So that's what I'm doing. And that's what I'll keep doing. — Adam Ellis (@moby_dickhead) August 26, 2017

In the second thread, things got even weirder:

So, I moved the green chair out of the bedroom weeks ago. It's been in various parts of the living room ever since. (thread) pic.twitter.com/aqq5RTjiRj — Adam Ellis (@moby_dickhead) August 29, 2017

I should probably get rid of it, but I'm not sure that would have any effect. — Adam Ellis (@moby_dickhead) August 29, 2017

Also, I'm going on vacation to Japan in 3 weeks, & I keep thinking if I can make it to my trip, this will all end, as dumb as that sounds. — Adam Ellis (@moby_dickhead) August 29, 2017

David lost track of me once when I moved, so maybe if he believes I've left the apartment again, he'll leave me alone. — Adam Ellis (@moby_dickhead) August 29, 2017

Anyway, last week I bough a pet monitoring camera so I can keep an eye on the cats while I'm overseas. — Adam Ellis (@moby_dickhead) August 29, 2017

It's basically a nanny cam that connects to the wifi, so you can check in whenever you want. It runs 24/7. — Adam Ellis (@moby_dickhead) August 29, 2017

It also alerts you to sound and movement via an app. (I blacked out the company, since I doubt they want to be associated with ghosts) pic.twitter.com/sp4ZwFHDp6 — Adam Ellis (@moby_dickhead) August 29, 2017

In any event, I decided to test it out this weekend. I was away from home one night, so I set up the camera before I left. — Adam Ellis (@moby_dickhead) August 29, 2017

My phone pinged periodically through the evening, alerting me to the cats running around and playing. Normal stuff. — Adam Ellis (@moby_dickhead) August 29, 2017

Then, around 11, it alerted me again that it detected motion, but when I checked the feed of my apartment, I didn't see anything. — Adam Ellis (@moby_dickhead) August 29, 2017

So I watched the feed again. Still nothing. I watched it a third time, and finally noticed something. — Adam Ellis (@moby_dickhead) August 29, 2017

I knew it couldn't be the wind, because I haven't had the windows open at all this summer (I have AC and like to keep it chilly). — Adam Ellis (@moby_dickhead) August 29, 2017

It was unnerving, but there wasn't anything I could do about it right then, so I flipped my phone off and tried not to panic. — Adam Ellis (@moby_dickhead) August 29, 2017

About half an hour later, I got another motion alert. — Adam Ellis (@moby_dickhead) August 29, 2017

Here's the feed of that alert. pic.twitter.com/6FHmUyIRBx — Adam Ellis (@moby_dickhead) August 29, 2017

If you missed it the first time (like me) look above the shelf. It's a little turtle shell that I hung on the wall. — Adam Ellis (@moby_dickhead) August 29, 2017

Yes, I know it's weird to own a turtle shell, but my family lives in Montana and I picked it up last year at a native trading post. pic.twitter.com/9rECEv7iYh — Adam Ellis (@moby_dickhead) August 29, 2017

Since I've been back home, I've been too nervous to turn the camera back on, and today has been pretty quiet. — Adam Ellis (@moby_dickhead) August 29, 2017

That said, I feel really uneasy. I put the chair in the hall. — Adam Ellis (@moby_dickhead) August 29, 2017

I hope nothing else happens tonight. — Adam Ellis (@moby_dickhead) August 29, 2017

Wait, wtf. Someone just pointed out that one of the blue chair in the background disappears in the second video. pic.twitter.com/mhlslwwzlV — Adam Ellis (@moby_dickhead) August 29, 2017

I just went and checked and the blue chair is back where it's supposed to be? pic.twitter.com/8Z1R14ipiG — Adam Ellis (@moby_dickhead) August 29, 2017

Fuck this, I'm not staying here tonight. — Adam Ellis (@moby_dickhead) August 29, 2017

Wait, now people are pointing out the chair is still there, it's just the lighting. This is too much. I'm taking a xanax and going to bed. — Adam Ellis (@moby_dickhead) August 29, 2017

At the time of writing, this is Ellis' latest tweet:

For everyone asking—yes, I'm alive! I'm just not home much during the week. I promise I'll keep you all updated should anything happen! — Adam Ellis (@moby_dickhead) August 31, 2017

Okay, so Ellis could be making all of this up for Twitter points. It would be impressively elaborate, but it is of course possible.

He's a storyteller, after all, and the "Dear David" saga could be nothing more than a very well-told Twitter tale.

Either way, though, it's compulsive reading.

It's also surely not the last we'll hear about David...