While that’s extremely common in TV or movies, it almost never happens in real life.
You’ve never watched Forensic Files? 
Poisson/Hackman’s spot
From Reds 2 -
Victoria (Helen Mirren) has destroyed a vehicle with bodies inside to delay their pursuers -
Sarah: Where did you get the bodies?
Victoria: My freezer.
Happens all the time - that’s why safety professionals are always going on about taking doors off discarded freezers and refrigerators. (Though handy in the event of a nuclear blast).
We’ve discussed this before, but actually a 1950s-style refrigerator would provide a significant degree of protection at the periphery of a nuclear blast: protection from thermal flash, lung-damaging blast overpressure and flying debris. But no, not if the refrigerator was hurled half a mile by the explosion.
The downside is that after surviving the atomic blast, you’d never be able to get out of the fridge without outside help and slowly suffocate or die of thirst. 
Queen Victoria did, and also had clean linen and wash water etc delivered every day.
I just find that creepy. But …
That film started out interesting, then went off the rails…
Sadly, nobody in the freezer. But the house was still creepy as hell.
And it’s still there…still empty. It’s an old wood two-story on the family farm (147 acres) outside of Raleigh. It’s actually livable (with a bit of cleaning up). Neither her grandmother nor grandfather actually passed away in the house. They just got taken away to a nearby medical center…
And here we are.
I would not use “sadly” to describe not finding a dead body in the freezer.
Some people have a skewed sense of adventure.
Me? I’d jump so high I’d knock myself unconscious on the ceiling.
Like you never get hungry.
It’s rather a dull, small town. It could stand to be a bit more like Cabot Cove.
I was gonna use that joke, but I thought it was too sick.
In real life if you suspect someone of murder, and you are discussing it with them with no one else around…I bet you DON’T drink the tea they are serving.
The old “distract the other person and then swap the cups while they’re not looking” bit seems unlikely to have ever happened in real life.
Or getting poisoned and subsequently having to frantically search for/ chase after/ bargain for the little vial of antidote that will save your life.
I bought my first house from Robert Ettinger, “the father of Cryonics” and his wife Mae. Since they were retiring to Arizona, they left me a lot of their appliances and yard equipment, saving me a lot of money having to buy that stuff myself.
In the basement was a big old-fashioned working refrigerator. I got a lot of “find any frozen heads in there, haha?” comments from friends. I did not.
Yep, kinda ruined the second Indy film- that’s not the way poisons work.
So I was in my local swimming pool supply store the other day. Apparently there is no such thing as a dye that turns blue when people pee in the pool.
That’s why happens when your sidekick gets killed by a “mystery gunshot”.
I think most killers would choose a poison without a helpful vial lying somewhere about to save the hero. Also why not use real poison that kills instantly instead of a knockout poison that allows the killer to explain everything triumphantly to the woozy hero (allowing time for rescue).