Today we are doing a three-in-one special about Vincent's first three known rounds of murders—slitting the throat, bludgeoning with lighting equipment, and strangling/hanging with cords. Why we're doing a three-in-one post instead of separate posts will become apparent. For proper theming and because we have no names for the victims, let's use media tropes to label our victims.
So the first thing we need to establish is where these murders took place, which based on a combination of the weather map and looking out at the layout places this probably around Baltimore, Maryland. Or if not there specifically, in that general vicinity. This is important because looking out at the overcast skies of his first victim, we can get a sense of the weather. Baltimore and the area around it tends to run cooler outside of the summer season, so we don't need to narrow it down too specifically, just keep in mind it would be on the cooler end. That can also be intuited by the motto of his company being "rain, hail, or shine," the emphasis on the first two places this as a generally rainier area. So we can even narrow down the grey clouds overhead with his first victim being the beginnings of a rainstorm.
In a moment of Vincent being the most unsubtle man who has ever lived, we see what his weapon looks like as he stands right behind the cameras trained on the man he intends to kill. So this weapon is very inefficient for the murder he intents to commit, as this is very smooth save for the point at the end.
But Vincent then goes on to slice his throat sideways, meaning the wound was for the most part caused from a stab and then using brute strength to tear through our victim's neck. This would be shallow at the original he stabbed from and get progressive deeper with greater tearing in favor of a clean cut. The spray of blood means the carotid artery was severed, and the spray of blood would follow in turn with his heartbeats.
Now, the thing is that the victim would not be dead as quickly as is being portrayed. He could be unconscious that quickly, but even then he could maintain consciousness for around 15-25 seconds, not enough to fight Vincent off well, but enough that this song and dance would not happen.
Being able to spin a corpse into a dumpster (dumpsters became a thing in 1935 but became the standard across the board during the 1940s) simply would not happen. Even if he were dead this would be a stretch, but as there would be just enough awareness that even a shift in weight would have him slamming into the wall and getting blood absolutely everywhere.
Once in the dumpster, he would definitely be unconscious by that point. A wound like this is technically survivable with proper care and fast reaction times, but he would succumb beyond what anyone could do anything about within 1-2 minutes, and complete brain death in about 4-6 minutes, though the rest of the body would be considered dead before that point. This whole time, he would also be choking on his own blood.
But the blood would be absolutely everywhere. Vincent's suit would be ruined, and given the shade in the alleyway, even if a storm were about to come through, it would not wash away all of the blood.
So here we have the murder of a man whose hair predicted the movie Frozen an estimated 65-70 years later, and for that reason Vincent decided he had to die. His method of doing this is to steal one of the stage lights and wield it as essentially a large hammer to commit unspeakable acts of violence on his chest cavity.
A blow like this would break his sternum and most of it not all of his ribs simultaneously, which would at that point detach them from the spine and push shards of those bones into the surrounding organs and muscles, puncturing basically everything, collapsing one or both lungs, and could cause his heart to go into ventricular fibrillation, meaning a death by cardiac arrest.
The momentum of the stage light and the fact we see him on the ground a few seconds later would mean he was then slammed into the ground, which would concentrate all that additional force onto his back, where his vertebra could shatter and drive fragments into his spinal cord or into the discs, which would result in debilitating pain at best and outright paralysis at worst.
This is actually what should have fucked over Alastor during the Adam fight just as much if not more than the actual chest wound, because Adam is terrible at wielding an axe and used it more like a baseball bat. I didn't get into the paralysis element and more the spinal discs there because demons seem to be a bit more robust, but our soon-to-be corpse here is not so lucky.
Given we see him raising his arms a moment later, the cervical vertebra and at least T1-T2 have remained intact, though he could doubtfully be able to move his legs by this point. Vincent then brings the stage light down on him, and given stage lights back in the day had a range of how much they could weigh, accounting for the stand it was on means this one likely weighed somewhere between 60-100 pounds.
That weight being brought down onto either the head or the torso would cave it open, crushing anything it came into contact with and resulting in near-instant death if to his head and death within 5-15 seconds to the chest cavity, though he would be entirely in shock, if conscious at all.
Nobody ever hangs people right. Vincent is no exception. Using a microphone cable as means of strangulation already poses a problem inherently. As is the case with most electronics, microphone cables in the 1950s were more durable than they are today, but that was at the cost of them being far less flexible. He may have been able to wrap it around a man's throat, but the process of doing so would be so intensive that he would need to somehow catch his victim off guard for the entire time it would take to wrap it around. Though we can't actually see him having wrapped it around, it really looks like he's just forcing his foot onto this man's back against the cable, which would be a far slower means of suffocation.
Strangulation should prioritize cutting off circulation of blood flow to the brain, and that can happen in only a matter of seconds, but that does not seem to be the case here, and would be closer to in the realm of 2 minutes.
However, Vincent doubtfully had the time to pull that off, as there was someone else either in the room or walking in on the scene of the murder. Vincent proceeded to solve this problem the same way Monokuma would begin a Danganronpa execution, using the cable like a lasso around this man's neck to pull him over, throw the cable over the rafters, and somehow tie both these men to the cable to hang them.
Congratulations, Vincent. You found a new way to hang people incorrectly. I already mentioned the lack of flexibility a microphone cable from the 1950s would have, and how they were more durable for it. However, that would only account for tens of pounds before it would fray and snap. Looking at the size of these two men, that's an estimated 350-400 pounds against one rope, that Vincent is hoisting into the air with his raw strength. The metal rafters would lighten the load slightly, but even if he were to put his entire body weight into this, he wouldn't be able to manage. Even the most skilled lifters can only go up to about 4x their strength, and that in no way lines up with Vincent's overall build.
Adrenaline would be able to compensate for this to come degree, that's how there are stories of parents lifting cars off their children, but the difference there is that the human body is actually a lot stronger than we give it credit for, because if we were to use our full strength, we would actually injure ourselves. So for Vincent to be able to do this, he would need to be ridiculously strong as it was, and then have a boost from adrenaline that would leave him with a multitude of strained muscles that could tear with minimal provocation.
But assuming all of this was possible, the added weight would make this similar to a short drop hanging, where the death is induced by more proper strangulation, so depending on where the rope was around their necks, would cut off of blood flow in the range of anywhere between 15 seconds and 2 minutes, though actual death could even take as long as 12-15 minutes if it was done poorly.
This would also mean because of the weight that the hyoid bone could be broken. It's less common in hangings than in manual strangulation, but at least with the redhead, it's very likely the hyoid bone would be broken and this would be ruled a homicide as a result.
In Summary: Vox told us "I'll show you failure" and he did not disappoint. He should have been arrested at every turn, and the murders he commits requires a level of physical strength that is laughable for him to accomplish naturally, and if he did it through adrenaline, not only would he still not be able to compensate fully, but he would be badly injured.
Chalk Outline #1 - Plausible, though details are unrealistic and murder was highly impractical. Done through brute force more than the weapon.
Chalk Outline #2 - Plausible, though the weight of the light and the way he was swinging is highly improbable even if going on the lighter end of that spectrum.
Chalk Outline #3 - Plausible had he continued with the original method. But the improvised hanging was impossible.
Chalk Outline #4 - Impossible.
Do better, Vincent, then I wouldn't have to bully you for your murdering skills.
Granted, at least he did kill people, questionable though his methods may be. Adam took an axe to Alastor's chest and sent him flying, and it was hardly an inconvenience.