qui se cache derrière

who is behind

→ qui
phrase Rare #33,601
who is behind Can be literal, as in asking who is behind a mask or curtain, or figurative, as in asking who is responsible for something.
FR: Qui se cache derrière cette idée ?
EN: Who is behind this idea?

Qui se cache derrière le masque?

Who is hiding behind the mask?

— Qui suis-je (2014)

J'ai trouvé qui se cache derrière le pseudo Evergreen.

I found out who's behind the username Evergreen.

— Old Boy (2003)

Qu'est-ce qui se cache derrière ce mur?

What lies behind this wall?

Résous le mystère qui se cache derrière le meurtre.

Solve the mystery behind the murder.

T'en sais beaucoup sur moi pour un connard qui se cache derrière un faux numéro.

You sure know a lot about me for an asshole hiding behind a fake number.

— Scream 7 (2026)

Qui se cache derrière le rideau?

Who is hiding behind the curtain?

Voyons qui se cache derrière le masque.

Let's see who is hiding behind the mask.

Je crois savoir qui se cache derrière tout ça.

I think I know who is behind all this.