"Dark Streets" presents the strange spectacle of Jack Mulhall talking to himself. Yessir, it's a dual role, and one of the first in the audibles. Jack plays an honest cop and his twin, a gangster. He does a good job of it. Not as much can be said for the picture. It's just one of those things. Lila Lee is the little Irish girl who has a tough time picking the right brother for a husband. All Talkie.