| 1 | Main Title | Jerry Goldsmith | 2:33 |
| 2 | You Gotta Let Me Go | Jerry Goldsmith | 2:43 |
| 3 | The Decoders | Johann Sebastian Bach | 2:38 |
| 4 | Checkmate | Jerry Goldsmith | 2:15 |
| 5 | Carol’s Apartment | Jerry Goldsmith | 3:00 |
| 6 | Comes the Night | Jerry Goldsmith & Hal Shaper | 2:41 |
| 7 | Night Scene | Jerry Goldsmith | 1:13 |
| 8 | The Trip | Jerry Goldsmith | 2:30 |
| 9 | Sputnik Code | Tristram Cary | 1:53 |
| 10 | First Day at Work | Jerry Goldsmith | 3:29 |
| 11 | The Red Insect | Jerry Goldsmith | 2:32 |
| 12 | Main Title | Jerry Goldsmith | 3:57 |
| 13 | First Day at Work | Jerry Goldsmith | 3:25 |
| 14 | The Decoders | Jerry Goldsmith | 2:50 |
| 15 | Night Scene | Jerry Goldsmith | 1:03 |
| 16 | Juke Box Jury Number | Jerry Goldsmith | 0:13 |
| 17 | A Matter for Thought | Jerry Goldsmith | 0:37 |
| 18 | A Visit to Carol | Jerry Goldsmith | 0:59 |
| 19 | Under Observation (Checkmate #2) | Jerry Goldsmith | 0:37 |
| 20 | The Pursuit (Checkmate #3) | Jerry Goldsmith | 1:04 |
| 21 | Checkmate (Checkmate #1) | Jerry Goldsmith | 0:57 |
| 22 | In a Bad Way | Jerry Goldsmith | 0:57 |
| 23 | The Interior Decorator | Jerry Goldsmith | 0:29 |
| 24 | Caught in the Act | Jerry Goldsmith | 0:32 |
| 25 | No Answer (Carol’s Apartment #2) | Jerry Goldsmith | 1:08 |
| 26 | A New Assignment | Jerry Goldsmith | 0:56 |
| 27 | Jodrell Bank | Jerry Goldsmith | 1:11 |
| 28 | The Wrong Address (Carol’s Apartment #1) | Jerry Goldsmith | 1:44 |
| 29 | Comes the Night (Carol’s Theme) | Jerry Goldsmith & Hal Shaper | 2:04 |
| 30 | The Trip | Jerry Goldsmith | 1:56 |
| 31 | The Right Address | Jerry Goldsmith | 0:51 |
| 32 | End Title | Jerry Goldsmith | 3:48 |
| 33 | Sputnik Code Revision – Code With Morse | Tristram Cary | 1:37 |
| 34 | Sputnik Code Revision – Code Without Morse | Tristram Cary | 0:13 |
| 35 | Sputnik Code Revision – Proper Speed (full mix) | Tristram Cary | 3:55 |
| 36 | Loop 1 – Clicks and Scrapes | Tristram Cary | 0:57 |
| 37 | Loop 2 – Electronic Codes | Tristram Cary | 0:57 |
| 38 | Loop 3 – Rattle and Low Notes | Tristram Cary | 0:49 |
| 39 | Sputnik Code – Very Wild Mix | Tristram Cary | 2:12 |
| 40 | Sputnik Code – Mix With Code | Tristram Cary | 1:50 |
| 41 | Final Code Mix – With 10-Second Pulse Removed | Tristram Cary | 1:11 |
| 42 | Code 1 | Tristram Cary | 1:10 |
| 43 | Code 3 | Tristram Cary | 1:06 |
| 44 | Assorted Sounds for Titles | Tristram Cary | 2:23 |