It's the night of December 12, 2018, when a 911 call comes into the Menlo Park Police Department.

The operator can barely make sense of the man on the other end.

He's screaming, panicked, incoherent.

Then finally, a full sentence cuts through the chaos.

There's a lot of blood.

Deputies are immediately dispatched and start tearing through the upscale neighborhoods,

pass gated homes on their way to Valparaiso Avenue.

Moments later, the tires of multiple cruisers screech as they pull up to the curb outside a, well-manicured lawn.

As they rush to the front porch with weapons drawn, the shrill screams from inside the

home become louder.

Deputies find two men standing in the hallway.

One is in his late 50s and holding a large knife to the throat of the other, who looks to be in his late 20s.

He's barefoot, rail thin, shirtless and drenched in blood.

The deputies start shouting commands,

Drop the knife! Put your hands in the air!

The man covered in blood steps forward as the old man stumbles back,

hitting a countertop

and dropping the knife on the floor.

When the deputy reaches for the suspect, his hands slide off his wrists, slick from the

blood running past his elbows.

Finally, the cuffs snap into place.

As the deputy guides him to the cruiser, he notices blood dripping from the corners of his mouth.

...