"I'm afraid that's no good either," Barker said, with a very good imitation of regret. "Any one could have the sheath of the knife. You'll have to give a reason for killing Sorrell before we'll even begin to believe you."
"Well," she said sullenly after a long silence, "if you must 'ave it, I killed 'im because 'e was going to shoot my Rosie."
"Who is Rosie?"
"My daughter."
"Why should he shoot your daughter?"
"Because she wouldn't have anything to do with the likes of 'im."
"Does your daughter live with you?"
"No."
"Then perhaps you'll let me have her address."
"No; you can't have 'er address. She's gone abroad."