In Disney’s Frozen, Elsa is captured by Prince Hans and wakes up in a prison cell in the basement of the castle.
What is unusual about this prison cell is that it has clearly been custom-built to contain Elsa herself. The shackles are gauntlets that cover her entire hands and prevent her from using her powers. There is no access to water for her to freeze and the chains stop just short of the window and the lake outside.
But where did this prison cell come from?
One answer might be that Hans witnessed Elsa’s powers at the coronation, watched Anna ride off to find her sister and immediately leapt in to action. While managing a kingdom in panic, endearing himself to the people of Arendelle with blankets and provisions and dealing with an equally conspiring Duke, he covertly (but quickly) commissioned a prison to withhold powers he had only witnessed once (on the off-chance someone might spontaneously suggest a search party to go capture Elsa and that search party actually managed to do it).
In this case the prison could be the invention of a particularly motivated prince, or even – whisper it – a plot-hole (I mean, it wouldn’t be the only plot-hole in Frozen) but what if there is a darker explanation here?
What if…
Elsa’s prison was built by a member of her own family
DisneyTheory.com 
