A morning autopsy of Natasha reveals the same effect on the brain. Dr. Wells also performs an autopsy on the beast. After everyone has cleared out of the baggage car to join breakfast, except for our heroes of course, Kitty immediately cuts off the beast's head. Paranoid or cautious? In the darkness, she notices the one good of the beast has a faint reddish glow that is fading fast. Satisfied that the decapitation is sufficient, she fails to mention the glowing affect to her compatriots.
After breakfast, Dr. Wells has an idea about the eyes, the creatures does not suffer the same whitish effect of his victims, so they remove the eye and study it under a microscope. Inside the viscous fluid, they see images, the latest being the inspector just before he shoots the beast and the oldest apparently dinosaurs and other ancient creatures. Apparently this ancient yeti is far older than Saxton presumed. The images captured within the eye should still prove valuable enough when brought back to the Royal Society.
They are soon joined by the ever curious Countess and the buzz-kill Pujardov. She finds the whole thing fascinating. Out of curiosity, the party also tested an eye from each of the victims but they did not show the same effect. Pujardov is incensed at the scientific heresy, it is an affront to God he exclaims. During his diatribe he throws one of the eyes across the room and leaves in disgust, dragging the pour countess with him.
Only later do they discover that Pujardov has taken the beast's eye. The group splits up to find the mad monk. Unfortunately, Miss Jones is the one who heads back to the baggage car to search. There she suffers the same fate as the other victims. It is the inspector who discovers the body. It is now clear that somehow the beast or something inhabiting it has escaped, perhaps into a new host. Doctor Wells suggests they search everyone's eyes, which seems to pose some significance to the entity.
The inspector orders all passengers and staff gathered in the dining car and all eyes are investigated, including his own. However, nothing suspicious is discovered. The passengers are pissed off and borderline panicked, but the inspector orders everyone to calm down and go about their business. Silas suggests that at least everyone remain in groups, at least pair up. At no point should anyone be left alone.
Later that evening, the young engineer as playing his usual game of chess, he is sitting with an American woman in the dining car. They are alone. She falls asleep. When she awakes in darkness, after turning up the lamp, her screams alert the players. The engineer is dead, just like the others. She remembers the game, him talking to himself, and she just fell asleep. The light was on when she fell asleep and off when she awoke. She remembers nothing else out of the ordinary.
It is now a train full of suspicious and paranoid passengers. And the heroes have no further clues as to may be hosting the entity.
Late during the fourth day, the train comes to an emergency stop at a small way station to take aboard Captain Kazan and his men. He immediately seizes control of the train. He begins by interrogating all of the foreigners first; he suspects one is spy and therefore the killer as well. He does not believe any of the mumbo-jumbo about body swapping entities.
With most gathered once again in the dining car, Kazan harangues the incompetent inspector and taunts the mad monk. Silas has a epiphany, the lights, all the attacks have occurred in darkness. That is why the inspections of the eyes revealed nothing. Using a minor cantrip, he momentarily dims all of the lights in the car. The inspector's eyes glow red, he has been hosting the entity all this time!
Panic ensues and Kazan and his men open fire on the fleeing inspector, followed closely by the mad monk. Dr. Wells and Saxton rouse the passengers and heard the back to the safety of the baggage car. Our heroes follow the chaos going the other direction down the train. As they catch up to Kazan, he is standing over the corpse of the deceased inspector. His men throw the body off the moving train. As far is he is concerned, the threat is over. But where is the mad monk? Does he pose a threat?
The large group rushes to the private car of the Count and Countess, too late to discover the darkened room and the now possessed monk with his arm around the Count's throat. Pujardov lost all reason and gave himself voluntarily to the entity. Silas realizes this because now his occult sense can actually feel the overwhelming presence of the entity. It is ancient, evil and very, very powerful.
With a simple twist, Pujardov rips the Count's head clean off then wades into the Cossack soldiers, felling them left and right. His is ripping limbs and bodies apart. In the ensuing darkness and chaos, the heroes lose track of each other. Brian runs out of the room to the telegraph room, he remembers seeing on the map the next station has a second line that ends in a cliff. He sends an emergency message, claiming to be from Kazan, ordering the switch pulled to send the train down the dead-end line and over the cliff. Kitty is running to the back of the train. She will attempt to disconnect the baggage car for the rest, saving everyone.
Meanwhile, Silas has grabbed the Countess, and lead her out of the room, towards the front of the train! He wraps his armored jacket around her and hoists her atop the coal car. He then begins to detach the remainder of the train. His only thought, save the Countess and leave him aboard the remaining cars to battle the evil!
As the cars separate, the Countess riding away to safety, Silas turns to face the devil! The walls of the car around him explode in wooden fragments, revealing the possessed Pujardov. The voice emanating from him is the monk's and all the other victims, and something else. Something evil. The entity waves his hand and all of the deceased soldier behind him spring up as animated zombies. They pursue Brian and Kitty.
It turns its red eyes to Silas.
"You have power, you have strength, I must possess your soul and body. This shell of a priest is nothing compared to you!"
Silas is almost knocked to the ground as the force of the entity tries to invade his mind. Beads of sweat dot his forehead as he resists with all his will. He straightens, spreads his arms and casts a bolt of energy into the creature. The creature fires back with a blast of dark matter, and Silas is hurt badly. But he keeps to his feet and begins another bolt spell.
Kitty has made it to the back and is attempting to detach the baggage car. Brian is battling his way to the back as zombie soldier attempt to repeatedly stab him with their sabers. Realizing he cannot fight them all and still get himself to safety, he rips the gas-line from the wall, as the gas begins to fill the cars, the flames of the lamps begin to flicker. Brian runs as fast as he can to the back, he must get to the safety of the baggage car before it detaches!
Back at the front, the stormy night sky is lit up by the power of the eldritch energies being fired back in forth between Silas and the entity. Both are weakened, near death, but neither will give up. But the entity has millennia of hatred to lend it strength and Silas has spent his last reserves, he falls to his knees, knowing the end was near and he had failed his friends. At least the Countess would be safe.
He screams in agony as he feels the force of the entity invade his mind, attempting to wrest control!
Brian leaps to the baggage car as it separates!
Zombies rush through the detached cars, oblivious to what was happening!
As the darkness fills Silas, he feels his soul slipping away…
Fireballs rip through the night as the gas filled cars explode in a fury! The living flames rush through the cars, destroying the zombies, then explodes onto the car with Silas and the entity. As the flames engulf the body of Pujardov and incinerate it, Silas is blown backwards off the car. His soul is free as the entity dies, fading to nothingness.
Silas looks up into the night sky, a smile plays across his face, and he slips into unconsciousness.
Up ahead, the station master has done his duty and followed orders, the switch has been thrown. With visibility poor because of the blizzard, the train engineer does not notice the car slide onto the secondary track. At the last moment, he realizes the danger as he and the two cars go hurtling off the cliff, exploding into the earth far below. Sadly, the Countess is among the victims of this horrific crash.
Brian leads Kitty the survivors to the rail station. Along the way, they pick up the battered and near death body of Silas. The good Dr. Wells does what he can to keep Silas alive. It will be a long wait for officials to end another train, investigate the circumstances, and release everyone to continue their journey. Silas will have the time he needs to heal.
But when he awakens and learns the fate of the Countess. What then? What will the guilt do to him?