"If Vengeance Fails!" Part 3 of 3. Script by Jim Shooter. Pencils by George Evans. Inks by Jack Abel. Cover by Ed Hannigan and Joe Sinnott. In heartbreaking fashion the Sub-Mariner's long-time friend has perished at the hands of Dr. Dorcas. And now the enraged Avenging Son is ready to avenge! But Doctor Doom thinks a hasty retreat would be more prudent! So the Prince of Atlantis and the Latverian monarch escape to Castle Doom to plot their final assault on Attuma and Hydro-Base! And several hours later, the powerful pair strikes! Doctor Doom attacks by air and Prince Namor by sea! Do Attuma, Dr. Dorcas, and Tiger Shark stand a chance against the fighting mad Sub-Mariner? Imperious Rex! Deaths of Dr. Dorcas and Saru-San. Cameo appearance by Tamara. (Notes: Attuma returns in Avengers 154. Tiger Shark appears next in Ms. Marvel (1st series) 15. The letters page includes letters from comics historian Peter Sanderson and cartoonist Jay Zilber, respectively. This issue contains a full-page ad for Hostess Fruit Pies featuring the Hulk vs. the Abomination and Wendigo.) 32 pages Cover price $0.25.