A scarcely perceptible shiver ran through her shrunken figure. “What else can I think?” she parried.

He shrugged his shoulders. The impression haunted him that she was not so sure of the Phantom’s guilt as she appeared. He ran his eyes over the floor, the walls, and the murky ceiling.

“And you needn’t try to find any hidden openings, either,” she told him, again reading his unspoken thoughts. “A bunch of headquarters detectives spent half a day tapping the walls and the ceiling and ripping up boards in the floor. The Phantom——”

The jangle of the bell at the outer door interrupted her, and she looked scowlingly toward the front of the store. “I guess that’s Officer Pinto,” she muttered. “He’s on night duty, but he’s been prowling around here most of the time since the murder, asking silly questions when he ought to be in bed.”

A hard, wary glitter appeared in the Phantom’s eyes as she left the room. In an instant he had scented danger.

CHAPTER V—DANGER

Coolly, though every nerve and muscle in his body were on the alert, the Phantom took a case from his pocket and lighted a cigarette. He stood face to face with a peril of a tangible and definite kind. The protecting beard was dependable only so long as he did not attract the attention of the police and invite a closer scrutiny. It would not for long deceive an officer whose training had made him habitually suspicious of appearances and who had been drilled in the art of seeing through disguises.

Voices came from the outer room, Mrs. Trippe’s surly tones clashing with the gruff accents of Officer Pinto. The Phantom felt a tingle of suspense. It was the kind of situation he would have thoroughly enjoyed but for the fact that in this instance he could not jeopardize his liberty without also endangering his purpose.

Footsteps approached, and presently a stocky figure, with the housekeeper hovering behind, stood framed in the doorway. The Phantom, smiling serenely, felt instant relief the moment he glanced at the heavy and somewhat reddish features, with the unimpressive jaw and the stolid look in the eyes. Pinto might be a faithful plodder and a dangerous adversary in a physical encounter, but it was plain that he possessed only ordinary intelligence.

“Well, who’re you?” bluntly demanded the officer.