| 0 | - | cover | 1 | pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard | |
| 1 | Title Page and Credits | credits, title page | 5 | pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard | |
| 2 | - | cover reprint (on interior page) | 1 | pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard | |
| 3 | Chapter 1: Who Goes There? | comic story | 20 | script: Dan Abnett; pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard; letters: I. N. J. Culbard | |
| 4 | - | text story | 4 | script: Nik Abnett; letters: Nik Abnett | |
| 5 | - | cover reprint (on interior page) | 1 | pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard | |
| 6 | Chapter 2: Friend or Foe | comic story | 20 | script: Dan Abnett; pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard; letters: I. N. J. Culbard | |
| 7 | Site 1 Mod Log Transcript Authorised Access Only | text story | 5 | script: Nik Abnett | |
| 8 | - | cover reprint (on interior page) | 1 | pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard | |
| 9 | Chapter 3: Into the Unknown | comic story | 20 | script: Dan Abnett; pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard; letters: I. N. J. Culbard | |
| 10 | The Case of Alien Identity | text story | 5 | script: Nik Abnett | |
| 11 | - | cover reprint (on interior page) | 1 | pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard | |
| 12 | Chapter 4: Curiosity | comic story | 20 | script: Dan Abnett; pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard; letters: I. N. J. Culbard | |
| 13 | - | text story | 2 | script: Nik Abnett | |
| 14 | - | cover reprint (on interior page) | 1 | pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard | |
| 15 | Chapter 5: Shoot to Kill | comic story | 20 | script: Dan Abnett; pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard; letters: I. N. J. Culbard | |
| 16 | - | text story | 3 | script: Nik Abnett | |
| 17 | - | cover reprint (on interior page) | 1 | pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard | |
| 18 | Chapter 6: National Security | comic story | 20 | script: Dan Abnett; pencils: I. N. J. Culbard; inks: I. N. J. Culbard; colors: I. N. J. Culbard; letters: I. N. J. Culbard | |
| 19 | Transcript of a Note Left by Lewis Cornfelt | text story | 2 | script: Nik Abnett | |
| 20 | Issue One Variant Cover | cover reprint (on interior page) | 1 | pencils: Jake Wyatt; inks: Jake Wyatt; colors: Jake Wyatt | |
| 21 | Issue One Boom! Ten Years Variant Cover | cover reprint (on interior page) | 2 | pencils: Rob Guillory; inks: Rob Guillory; colors: Rob Guillory | |
| 22 | Issue One Variant Cover | cover reprint (on interior page) | 1 | pencils: Jeff Lemire; inks: Jeff Lemire; colors: Jeff Lemire | |