| Issue | #20 |
| Published | [June] 1987 |
| Cover Price | 2.00 CAD; 1.70 USD |
| Pages | 36 |
| Editing | Mike Charbonneau |
| Genre | Adventure |
| Pencils | Barry Blair |
| Inks | Guang Yap |
| Characters | Toshiro Kimura; Marianne Fitzwalter; Father Tucker; John Biggs; Mitch Miller; Billy Ruby; Alana Dale; Professor Stringfellow; Homer Bently; Archie Bodonie; Marduk |
| Synopsis | Toshiro and crew head back to the sewers to destroy Marduk's latest projects. |
| Genre | Adventure |
| Script | Barry Blair; Roger Camm |
| Pencils | Barry Blair |
| Inks | Guang Yap |
| Letters | Mike Charbonneau |
| Characters | Yue Long; Alex Drake; Simon Stringfellow; Li Huay Chen; Dr Vokra [Dr Otto Arkoff] |
| Synopsis | The other students get wise to Dr Vokra's plans. Dr Vokra is revealed to be Dr Otto Arkoff. |
| Genre | Adventure |
| Script | Marty Pahls |
| Pencils | Marty Pahls |
| Inks | Marty Pahls |
| Letters | Marty Pahls |