"This is" in captions is one of the clues to Joe Gill--here you see it in "The Double Identities" and "Oil!" In the same tier in the latter you see it in the past tense too, as you're more likely to see it in Gill's Charlton scripts.
Rick Davis in Spy Thrillers—Written by Joe Gill
Nov/54 | #1 | The Double Identities |
The Purple Pyramid | ||
The Eyes of Death [MISC SPY] | ||
The Ticking Death | ||
Jan/55 | #2 | The Whirl of Death |
The Unseen Killers | ||
Incident [MISC SPY] | ||
The Telltale Machines | ||
Mar/ | #3 | Safari of Death |
The Moon Rocket | ||
Oil! [MISC SPY] | ||
The Hatchet Man | ||
May/ | #4 | The China Doll |
The Tiger's Claws | ||
The Deadly Dutch Plates |