chi l'ha fatto

who did it

→ chi
phrase Uncommon #17,960
who did it Used to ask which person performed an action or made something. The participle agrees with the thing made or affected: “chi l'ha fatta” means “who made it” when the thing is feminine.
IT: Hai scoperto chi l'ha fatto?
EN: Did you find out who did it?

Chi l'ha fatto, e a quale scopo?

Who did it, and for what purpose?

— The Garden of Sinners Chapter 5: Paradox Paradigm (2008)

Mi dica chi l'ha fatto.

Tell me who did it.

— Jojo Rabbit (2019)

Chi l'ha fatto?

Who did it?

— Oppenheimer (2023)

Sappiamo chi l'ha fatto!

We know who did it!

— Taxi Blues (1990)

Chi l'ha fatto stavolta?

Who did it this time?

— Leviathan (2014)

Noi sappiamo chi l'ha fatto.

We know who did it.

Chi l'ha fatto, e perché?

Who did it, and why?

— The Garden of Sinners Chapter 5: Paradox Paradigm (2008)

Chi l'ha fatto quello?

Who did that?

— Sacrificio (1986)

Ha detto che conosceva chi l'ha fatto.

He said he knew who had done it.