Two detectives join forces to find a serial killer with a personal agenda.
Use one of the services below to sign in to PBS:
tried to add this video to your Watchlist so you can watch
it later. But first, we need you to sign-in to PBS using one
of the services below. You’ll be able to manage
videos in your Watchlist, keep track of your favorite shows,
watch PBS in high definition, and much more!
tried to select this program as one of your favorites. But
first, we need you to sign-in to PBS using one of the
services below. You’ll be able to manage videos in
your Watchlist, keep track of your favorite shows, watch PBS
in high definition, and much more!
To get you
watching PBS in high definition we need you to sign-in to
PBS using one of the services below. You'll be able
to manage videos in your Watchlist, keep track of your
favorite shows, watch PBS in high definition, and much more!
Don’t have a PBS Account? Create one nowCreate a PBS account
Providing Support for PBS.org
Learn More about PBS online sponsorship
It’s Okay to Be Smart
Why I'm Scared of Spiders
The science of… OH GOD IS THAT A SPIDER?!
Add to Watchlist
Share this video:
Share this video on FacebookShare this video on Twitter
Why Does The Earth Have Layers?
…or why we live on an onion made of magma
Why Do Clouds Stay Up?
There's nothing wrong with having your head in the clouds
A Slice of Pizza Science!
How does math keep a folded slice from drooping?
The Physics of Space Battles
How scientifically accurate is your favorite sci-fi space battle?
The Real "Doctor Frankenstein"
When it comes to science, is there a monster in us all?
Where Does the Smell of Rain Come From?
I smell a science storm a-comin'!!
What If There Were No Sharks?
Sharks are WAY more important than you may realize.
The Oldest Living Things In The World
For some forms of live, old-age is relative.
Sunburn, Sweat and the Science of Summer!
A summertime look at why we sweat, why we burn, and why our fingers wrinkle in the pool
The Sun Is A Magnet!
Sunspots, solar flares, coronal mass ejections, OH MY!
How Your Body Knows Left From Right
Why are our bodies so symmetrical, but our guts aren't?
Why Your Brain Is In Your Head
Part 1 of 3 in my series about why our bodies are shaped the way they are.
The Delicious Science of CHEESE!
There's science in cheese? You'd cheddar believe it.
Why Did We Blow On Nintendo Games?
If you played NES, you did it too. Did it work?
Carbon and Oxygen and You: Explained
A little bit of explanation for the cycle of carbon and oxygen.
Why Does Time Go Forward?
The past is different from the future. Why?
The Science of BBQ!!!
Science is delicious.
The Science of Game of Thrones
You know nothing.
Your Mom is LITERALLY Part Of You!
Your mom's never far away.
The Far Future of the Universe
SPOILERS: It doesn't end well.
The Amazing Science of DUST?
No use cleaning. The universe is full of dust.
Sonic the Hedgehog Is Why You Have Thumbs!
Ever wonder why you have thumbs?
There Was No First Human
No, YOUR grandfather was a fish
Support for PBS.org provided by: