"How do you know that?"
"I guessed it, an' then I rang the bell an' one o' the girls told me I was on, an' then Pearl came down an' yelled for the bouncer an' they throwed me out."
In the lamplight of the street her face looked like the face of an innocent girl.
"Why didn't you call a policeman?" asked Luke.
"Aw, you know them. Pearl stands in."
"But they'd have got your sister, anyhow."
"Not the cop on this beat. I wouldn't give up to him the other night, and he run me in."
They stopped at a narrow door. There was a shop on one side of it and a saloon on the other.
"This is the place," said the girl. "Pearl's joint's over the store."
"You want me," asked Luke, "to go in and bring your sister out?"