I BOMBED!

II OUT OF THE POISON FOG

III HIGH EXPLOSIVE

IV THE CODE MESSAGE

V STRUCK DOWN FROM BEHIND

VI MURDER BELOW DECKS

VII " MAN OVERBOARD! "

VIII THE SECOND ATTACK

IX RED NABS A SPY

X A DESPERATE SCHEME

XI JAWS OF DEATH

XII TIGERS OF THE SEA

XIII WINGS OF DESTRUCTION

XIV THE MYSTERIOUS CAPTIVE

XV RED GETS A SHOCK

XVI DANGER AND A WOMAN

XVII ORDERS FROM WASHINGTON

XVIII THE DARK FIELD

XIX A LUCKY ENCOUNTER

XX THE TEST

XXI CHO-SAN

XXII WET TRACKS IN THE FOG

XXIII THE CHINESE CABINET

XXIV CHO-SAN'S NEWS

XXV LOTUS' CONFESSION

XXVI THE ROOM OF A THOUSAND TORMENTS

XXVII WHEN THE LIGHTS WENT OUT

XXVIII PULLING DEATH'S WHISKERS

XXIX THE WRATH OF CHO-SAN

XXX TRAPPED

XXXI THE SECRET CHAMBER

“JUST HOLD THAT POSE, SAILOR!” BARKED THE STOCKY LIEUTENANT.