I think this is an evil spirit at work.

我想这是恶魔在作祟。

《柯林斯英汉双解大词典》

In Latin demon meant "evil spirit."

在拉丁语中，demon的意思是“邪恶的灵魂”。

youdao

Saul's attendants said to him, "See, an evil spirit from God is tormenting you."

扫罗的臣仆对他说：“现在有恶魔从神那里来扰乱你。”

youdao

Here, King Carnival is the name given to the evil spirit and he goes up in smoke on beautiful Shell Beach.

BBC: A Caribbean carnival of carnivals

The unreliable narrator of the novel, a governess charged with caring for two children who may or may not see the ghosts she sees, invites the reader to flip-flop between thinking her a lone protector against unspeakable evil and a greater threat to the children than any spirit.

WSJ: Andrew Pyper, Author of The Demonologist, on Horror | Word Craft

Presumably they were wary of messing with a solid gold classic, but while "Oz" does present a wide target for critics, they shouldn't have worried: Director Sam Raimi ("The Amazing Spider-Man, " "The Evil Dead") takes care to honor the original in spirit and in style.

CNN: Review: 'Oz the Great and Powerful' is more than good enough