776—The Unfinished Letter.

777—A Difficult Trail.

778—A Six-word Puzzle.

782—A Woman’s Stratagem.

783—The Cliff Castle Affair.

784—A Prisoner of the Tomb.

785—A Resourceful Foe.

786—The Heir of Dr. Quartz.

787—Dr. Quartz, the Second.

789—The Great Hotel Tragedies.