Grand Guignol #31
| Series | Dylan Dog |
| Number | Vol. 1 #31 |
| Publisher | Sergio Bonelli Editore |
| Date | 1989-04 |
| Type | Comic Book, Softcover |
| Language | Italian |
| Art Director | Luigi Corteggi |
| Coordinator | Maria Baitelli |
| Cover Inker | Claudio Villa |
| Cover Penciler | Claudio Villa |
| Inker | Luigi Piccatto |
| Letterer | Carmen Bioletto |
| Managing Director | Decio Canzio |
| Penciler | Luigi Piccatto |
| Writer | Tiziano Sclavi |
| Copyright Holder | Sergio Bonelli Editore |
| Distributed By | A&G Marco |
| Printed By | Eurograph |
| Genre | Horror |
| Published in | Italy |
| Pages | 100 |
| Characters | Dylan Dog, Groucho, Inspector Bloch |
| Story Location | London |
Added by reknuggets