Dr. Kleiner felt a sense of dangerous foreboding in his heart as he bid farewell to Judith Mossman (After the war, they started living together but no feelings beyond friendship had formed between them) and took Lamarr out on one of her daily walks through the city. For some reason, he seemed worried for Judith's safety...and his own.

'I don't really understand it myself,' the scientist thought as he pulled Lamarr away from peeing on a fire hydrant, 'But I fear that today may just be my last day alive...god, I've been taking too many pills lately, I just knew it!'

Suddenly, a certain bespectacled man drove by in a car...and fired several bullets from a pistol, all of them tearing into Lamarr's alien flesh and causing it to explode.

"WWWWWWAAAAAAAAAHHHHHHHHHHH!! LAMARR!! NNNNNNNOOOOOOOOOOO!!" Dr. Kleiner screamed, clutching his head and staring at the puddle of light-green blood that was his beloved pet only a moment ago. The car that had shot the poor Headcrab skidded to a halt, and then burst apart as Gordon Freeman flew out of the car's roof and landed in front of Dr. Kleiner, who was pissing his pants in fear.

"G-Gordon Freeman! You...you killed Lamarr!" Dr. Kleiner shouted, stating the obvious as usual.

Gordon raised his crowbar and smashed it through the poor scientist's skull, piercing his brain and killing him. As he watched Dr. Kleiner slump to the ground, Gordon was surprised by how easy that all was. Still, even though Dr. Kleiner was now dead, there was another person he had to kill before moving on to his next victim...

...he needed to find Dr. Mossman and end her life as well.

Judith Mossman was brewing some home-made tea when she heard the apartment door squeak open.

She looked over her shoulder and called, "Dr. Kleiner...is that you? What you doing back so soon? Did Lamarr attack one of the neighbor's dogs again...?"

However...there was no answer.

"...Dr. Kleiner? Isaac? Hello?"

There was no answer.

A bit confused and fearful, Judith walked over to the front door and saw Gordon Freeman standing in the doorway, dragging Dr. Kleiner's corpse behind him.

"...G-G-Gordon?"

Everything was still for a moment...and then Gordon ran at her with his crowbar and pistol ready.

Judith let out a screech and turned to run, but tripped and fell just as Gordon swung his crowbar, allowing her to narrowly dodge it.

Judith tried to push herself back up, but Gordon kicked her down and pressed his foot against her chest as he aimed his pistol at her face. All the while, Judith was sobbing uncontrollably and begging for him to leave her alone.

"G-Gordon...if this is about betraying you guys with Dr. Breen, I already told you I'm sorry! I had to do it...I had to save E-Eli! Y-You and Alyx didn't understand...but I cared for him. I loved him, do you understand? But...but I made it up to you guys, right? So...so please spare me! Please! Please! STOP IT!!" the pitiful woman shrieked.

Just as Gordon's finger tightened on the pistol's trigger, something completely unexpected happened. Something...or someone...invisible to the naked eye landed a staggering punch to Gordon's jaw, sending the former hero flying into the wall across the room.

As Gordon tried to stand up, he wiped a trickle of blood off his mouth and watched as none other than G-Man slowly materialized in front of Judith's horrified eyes. If Gordon could have spoke, he would have demanded for G-Man to tell him what he was doing here. Since he couldn't, G-Man just went on explaining anyway.

"Sorry, Mr. Freeman," he hissed, "But after Alyx Vance's unfortunate and violent death at your hands, I realized it was mistake to let you run along freely and kill whoever you please. Mr. Freeman, it hurts me deeply to say this to someone like you, especially after the bond I feel that we had formed during the war, but I must kill you now..."

Staring up at G-Man's back, Judith blushed and thought, 'I'm not sure what he's talking about, but I think it's safe to assume this guy's here to save me! Fortunately for me, he's cute too...'

Tossing his iconic briefcase to the side, G-Man slightly crouched and held out his palms, resembling a fighting style similar to Ryu and Ken of Street Fighter fame.

Shaking his head at the strange old man's foolishness, Gordon charged with hsi crowbar held high.

The final fight had begun:

Mysterious Businessman-Cosplayer Vs. Psychotic Emotionless Mute!

Personally, Judith was cheering for G-Man...