in the hands of (someone)

1. Under the care, supervision, or direction of someone. It just goes to show that, in the hands of the right director, even the most ridiculous premise can make for a great movie. In the hands of our expert choreographer, you will be dancing like a professional in no time. We're leaving the kids in the hands of my mother-in-law while we're in Barcelona.

2. Possessed or controlled by someone. The country still maintains a rigid aristocracy, with most of the region's resources in the hands of a few wealthy elites. It galls me to think of my father's company now in the hands of that damned fool. I'm getting too old to run this business anymore, Jake—it's time that I left it in the hands of a younger man or woman.

in the hands of somebody

in somebody’s ˈhands

in the control of somebody or somebody’s responsibility: I’ll leave the matter in your hands. ♢ The future of the industry now lies in the hands of the government.