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.

将某人玩弄于股掌之间, 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.
这位魅力非凡的领导者似乎将人群玩弄于股掌之间
After years of working together, she finally felt she had her boss in the palm of her hand.
多年合作后,她终于觉得她把老板玩弄于股掌之间了。