What are some tell-tale signs someone is a serial killer?

I hope no one will ever make the mistake of thinking that there are always signs. Never underestimate a serial killer. They won't show you their true side or self, when meeting them. Ted Bundy was so handsome and charming. They usually are. Just know that you can't trust anybody. That has to be earned and never leave a social setting and go off with a stranger. You might not come back. Never be too trusting. Meet your dates in a social setting such as a bowling alley or nice restaurant but never meet them alone before you go on the date. If you can, check them out before you meet them. Being too nice, could be one of their traits. The "helpful" guy, watch out for. He may be genuine he may be not, but don't be too quick to trust. And that's a shame we even have to say that. Cuz there's some really nice guys out there. Always let someone know where you're going, where you're at and the guy's name. If you can, give them his license number. Better safe than sorry.

Just to name a few...
Controlling
No remorse
Narcissism
Lack of empathy
Superficial Charm
Manipulation

🤔 that list also matches my exes

-Visibly inauthentic, "uncanny feeling"
-Controlling towards people close to them
-History of harming animals
-Areas of disturbed soil in backyard of roughly human proportions
-Furniture made from human bones, skin
-Severed human heads on pikes throughout home
-Unlabeled, self-packaged meat products in freezer
-Carpeting in bathroom

First make sure they're not married before you meet someone. Haha or running from the police!

This is one of the benefits of being judgmental.

I learned of the McDonald triad. Three factors come into play when it comes to serial killing- Chronic bed-wetters past the age of five. Arson, and animal cruelty. Be very careful around these types of people

We can not assume there are any or we can make that kind of a judgement call when we first meet someone. If it were that easy they wouldn't be a successful serial killer because we or the potential victims would all read the signs beforehand and know that's what they were, lol. Derp.
Sometimes they are successful and charming or your next door neighbor that you thought was just the nicest guy.

A certain tightness well hidden yet still traceable
Something unnatural

They pretend to be good people. 👀

I wanted to also suggest that getting more in tune with a third sense starts with observation. Highly recommend the Human Behavior Panel channel, those are always good.

Eyes are close together, Keep to themselves, anti-social, can't tolerate people.

Generally you won't know upon first meeting someone, it's kind of situational. You just got to go with your gut to be honest, the biggest fear is mainly you gaslighting yourself.

@nebula: It's easy to tell. The serial ones lie head to foot in a line. The parallel killers lie beside each other.

Packing and storing humans in the freezer

Women are obsessed with him

🤷‍♂️

When they get too personal and they listen with their eyes open....then there is something wrong with him

They have this serial killing look...

Pity they don’t wear signs…🙁

When they are talking heads.

[media=https://youtu.be/CKti7QixnJI]

I don't know, but the house I grew up in was purchased from Gary Ridgeway a.k.a The Green River Killer. My dad worked with him at Kenworth Trucking. I never met him, they bought the house before I was born.
Both Mom & Dad said he was a strange dude.

They have a bottle of lotion and a basket, carrying a toy poodle