let (someone) in on (something)

idiom

: to allow (someone) to know (a secret)

He said he'd let me in on a secret if I promised not to tell anyone else.

Examples of let (someone) in on (something) in a Sentence

Recent Examples on the Web

Magnussen is fun as a character both spoiled and long-suffering; Arturo Castro is funny as a goofball biker who’s always the last to be let in on the gang’s plans. —Bill Goodykoontz, The Arizona Republic, 19 Mar. 2024

And once Gladden was let in on the secret at the very end and Marsden was able to be himself, their bond became even stronger. —Sydney Bucksbaum, EW.com, 13 July 2023

Although that scene was shot in a way that another group of people was almost also let in on the secret — the audience. —EW.com, 15 Nov. 2023

Of course, at the end of it all, Gladden was let in on the joke. —Kelly Wynne, Peoplemag, 4 Aug. 2023

With this week’s conclusion of Obi-Wan Kenobi, fans were let in on how Obi-Wan overcame his struggle to accept and move on from the tragic events of Star Wars: Episode III — Revenge of the Sith, which left him somewhat broken and the galaxy in peril. —Sydney Odman, The Hollywood Reporter, 24 June 2022

Judging by the lines — and the repeat customers — spring training fans are being let in on a secret that folks with the Diamondbacks have known for a few years. —Nick Piecoro, The Arizona Republic, 20 Mar. 2023

In episode five, viewers, along with Kamala herself, are let in on what truly happened the night that Kamala’s grandmother Sana (Samina Ahmad) got on a train to Pakistan during the Partition. —Sydney Odman, The Hollywood Reporter, 7 July 2022

But e was also let in on the formula of the rain-inducing chemicals. —San Diego Union-Tribune, 18 Jan. 2022