Was The Black Dahlia case solved?

No.

Elizabeth Short's gruesome 1947 murder remains unsolved.

Jailing the killer, who tortured the poor woman for several days before discarding her bisected and mutilated body on an L.A vacant lot, is unlikely as time passes - he's probably already dead or dying from old age, illness, etc.

Sadly, for The Black Dahlia and her family and friends, they'll never receive justice for this hideous crime. Hopefully no-one else becomes victim to such brutality and Elizabeth's life-taker burns in Hell as punishment.

RIP.