Death Rides the Last Patrol

Published in G-8 #67, 04/01/1939
[The Raven returns for another clash with G-8 and his Battle Aces! The man with coal-black skin is still out for revenge on our hero, the flying ace who shot down and killed the Raven's brother. Helping the Central Powers win the war would just be a fringe benefit. Von Ravenfeld's experiments on the POW human guinea pigs in his castle's dungeon laboratory have yielded a paralyzing gas.]