have someone in the palm of your hand

US /hæv ˈsʌm.wʌn ɪn ðə pɑːm əv jʊər hænd/
UK /hæv ˈsʌm.wʌn ɪn ðə pɑːm əv jʊər hænd/
"have someone in the palm of your hand" picture
1.

將某人玩弄於股掌之間, 完全控制某人

to have complete control over someone

:
The charismatic leader seemed to have the crowd in the palm of his hand.
這位魅力非凡的領導者似乎將人群玩弄於股掌之間
After years of working together, she finally felt she had her boss in the palm of her hand.
多年合作後,她終於覺得她把老闆玩弄於股掌之間了。