Zapped...
Hollywood never shows a technically effective way to commit a crime.
A script writer is required to conjure up a plot that suspends disbelief for the average viewer. Only occasionally will it intersect with reality.
My Uncle was a District Attorney. He's not allowed to watch any crime or legal dramas. The rest of the family cannot put up with his vocal scorn and abuse of the shows.
As for unreality: the next time you watch the shower scene in Psycho look up for the fire sprinkler head over the tub!
Try and find a 1950's strip motel with a fire surpression system!
And think of all of the Hollywood elevator cabins that have hatches to the topside! Any such hatch is code prohibited. They never exist anywhere except in the Hollywood imagination.
It's all mind candy, so I go with the flow and turn off my brain.