Let (someone) in on (something)
Translation of "let (someone) in on (something)" into Russian
let (someone) in on (something)
посвятить (кого-то) в (что-то)
She let me in on her secret plan.
Она посвятила меня в свой секретный план.
Definitions
To allow someone to become aware of or to share in a secret or confidential information.