| Issue | #10 |
| Published | Summer 1943 |
| Cover Price | 0.10 |
| Pages | 60 |
| Editing | Vince Fago |
| Characters | The Sub-Mariner [Prince Namor]; The Angel [Tom Halladay] (inset); the Japanese (villains) |
| Genre | superhero |
| Pencils | Alex Schomburg |
| Inks | Alex Schomburg |
| Letters | typeset |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |
| Characters | The Sub-Mariner [Prince Namor]; John Harris (FBI agent, death); Dolvin (villain, introduction, death); Gargo (villain) |
| Synopsis | Sub-Mariner must battle Dovin and his River God cult followers, who are trying to force the American government into signing a treaty of perace with Germany, or else the worst flood in history of the Ohio River will occur! |
| Genre | superhero |
| Pencils | Carl Pfeufer |
| Inks | Carl Pfeufer |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |
| Characters | Pop Andrew; Sheriff Pringle; Lem Rainer; Charlie Skinner; Skat (a shepherd dog); Cleve (villain) |
| Synopsis | Cleve had an idea for the perfect crime, but how did he know that his dog would leave a clue behind that would lead to an arrest: of the dog! |
| Pencils | ? (title only) |
| Inks | ? (title only) |
| Letters | typeset |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |
| Characters | The Sub-Mariner [Prince Namor]; Heinrich Himmler [sic Himler](villain); Von Schmeer [as Seaman Aikly] (villain, introduction) |
| Synopsis | Reichsführer Heinrich Himmler sends one of his students (in his school for spies and saboteurs) to America for the purpose of alerting Fifth Columnists to change the wave length of every Nazi short-wave radio on the East Coast as the FBI is on their trail. |
| Genre | superhero |
| Pencils | Carl Pfeufer |
| Inks | Carl Pfeufer |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |
| Characters | The Angel [Tom Hallaway]; Patrolman Cassidy; un-named prison Warden; Vince Heart (prison inmate, death); Joe Scarpone (villain, introduction, death); John Barlo (villain, introduction, death) |
| Synopsis | The murder of an inmate with important information for the warden leads the Angel into a life and death situation within the prison walls. |
| Genre | superhero |
| Pencils | Gustav Schrotter |
| Inks | Gustav Schrotter |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |