| Original Title | Past Imperfect |
| Original Language | English |
| Author | John Matthews (4) |
| Publisher | A.W. Bruna Uitgevers B.V. |
| Translated by | Martin Jansen in de Wal |
| Series | Zwarte Beertjes |
| Format | Paperback |
| Language | Dutch |
| Location | Utrecht |
| Copyright | 1998 |
| Copyright | 1999 |
| This Edition Published | 2001 |
| Pages / Font | 607 pages |
| Barcode | 9 789044 928792 |
| ISBN | 90-449-2879-1 |
| Nederlandse Uniforme Genre Indeling (NUGI) | 331 |
| Series Number | 2879 |
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