| Author | John le Carré |
| Imprint | Noguer |
| Series | George Smiley, Karla Trilogy |
| Publisher Series | Colección Esfinge |
| Publisher | Editorial Noger S.A. |
| Translated by | Carlos Casas |
| Copyright Holder | Authors Workshop A. G. |
| Copyright Holder (This Edition) | Editorial Noguer, S. A. |
| Printed by | Gráficas Instar |
| Distributed by/Director of Distribution | Norildis, S.A. |
| Format | Soft cover |
| Language | Spanish |
| Location | Spain |
| Copyright | 1977 |
| Copyright | 1978 |
| Printed | 1978 |
| Pages / Font | 651 pages |
| Series Number | 51 |
| Edition No. | 3 |
| ISBN 10 | 84-279-0058-9 |
| ISBN 10 | 0 340 22042 2 |
| DL (Spanish) | B. 39.592-1978 |
| Notes | Printed in Spain |
