Conrad suddenly ceased talking. A deep sigh was heard which did not come from any of the three. They sprang from their seats and looked about them. Jörgel had the most acute hearing of them all. He traced the unaccountable sound to the vicinity of the door and soon found a figure seated in a chair in a dark corner which the candles failed to light. Uttering a terrible curse he dragged the witness of their conspiracy into the light.