Tarling's face grew tense.
"This is where Lyne was shot," he said.
"And look there!" said Whiteside excitedly, pointing to the chest of drawers.
Tarling stepped quickly across the room and pulled out a garment which hung over the edge of the drawer. It was a night-dress—a silk night-dress with two little sprays of forget-me-nots embroidered on the sleeves. It was the companion to that which had been found about Lyne's body. And there was something more. The removal of the garment from the drawer disclosed a mark on the white enamel of the bureau. It was a bloody thumb print!
The detective looked round at his assistant, and the expression of his face was set in its hardest mask.
"Whiteside," he said quietly, "swear out a warrant for the arrest of Odette Rider on a charge of wilful murder. Telegraph all stations to detain this girl, and let me know the result."
Without another word he turned from the room and walked back to his lodgings.