Secret Service Operator #5, February 1937
| Periodical Title | Operator #5 |
| Cover Art by | John Howitt |
| Illustrator | Ralph Carlson |
| Publisher | Popular Publications, Inc. |
| Copyright Holder | Popular Publications, Inc. |
| Contributing Writer | Frank Gruber, Evan Leigh |
| Series | The Purple Invasion |
| Format | Pulp Magazine |
| Language | English |
| Location | New York, NY |
| Copyright | 1937 |
| Pages / Font | 112 pages |
| Volume Number | 8 |
| Issue Number | 3 |
| Chapters | America--Stand By! (An Editorial) Siege of the Thousand Patriots, by Curtis Steele Doubling in Death, by Frank Gruber Parade of the Assassins, by Evan Leigh The Secret Sentinel (A Department) Secret Sentinel Reports |
| Notes | Coontinues the 13-part Operator #5 storyline about the Purple Invasion, written by Emile C. Tepperman using the "Curtis Steele" house name. |
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