| Title | Pages | Publication | Code | Date | Publisher | System (Setting) |
|---|
 Arkham | 37-41 |  The Wild Hunt | | 2021 | Stygian Fox | Call of Cthulhu (Classic) | Arkham; 1920s |
 Artefacts and Curios | 95-138 |  Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Autophagia | | Autophagia | FXC-03 | 2019 | Stygian Fox | Call of Cthulhu (Classic) | New York; 1920s; Shoggoth |
| The Beginning of the Agency | 19-21 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Boston | 42-50 | The Wild Hunt | | 2021 | Stygian Fox | Call of Cthulhu (Classic) | Boston; 1920s |
 Cultist/Occultist | | Cultist/Occultist | | 2020 | Broken Things | Cultist/Occultist | |
| The Curious Case of Bare Knuckle Bill | 54-69 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Dual Expansion Set | | Dual Expansion Set | | 2018 | Dynamite Entertainment | Reanimator | |
| The Early Years | 22-29 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Golden Square and its Environs | 48-53 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| The Later Years | 40-47 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Massachusetts Back Country | 51-61 | The Wild Hunt | | 2021 | Stygian Fox | Call of Cthulhu (Classic) | Massachusetts; 1920s |
 The Mythos and Modernity | 53-54 |  Bayt al Azif | 4 | Jan 2022 | Bayt al Azif Inc | Call of Cthulhu (Now) | |
| The Mythos and Modernity | 26 | Bayt al Azif | 5 | May 2023 | Bayt al Azif Inc | Call of Cthulhu (Now) | |
| The Mythos and Modernity | 34 | Bayt al Azif | 6 | Feb 2026 | Bayt al Azif Inc | Call of Cthulhu (Classic) | |
| The Mythos and Technology | 87-88 | Bayt al Azif | 3 | Nov 2020 | Bayt al Azif Inc | Call of Cthulhu (Classic) | |
| New York | 29-36 | The Wild Hunt | | 2021 | Stygian Fox | Call of Cthulhu (Classic) | New York; 1920s |
| Ophelia Rising | 70-78 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Overview | 7-14 | The Wild Hunt | | 2021 | Stygian Fox | Call of Cthulhu (Classic) | |
| Populating London | 79-87 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| The Prime Years | 30-39 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Reanimator | | Reanimator | | 2018 | Dynamite Entertainment | Reanimator | |
| The Silent Mine | 57-66 | Laurium Adventures | MUH0860136 | 2026 | Modiphius Entertainment | Cohors Cthulhu | Austria |
| The Thirteen | 4-22 |  The Thirteen | | 2017 | Stygian Fox | Call of Cthulhu (Classic) | |
| The Three Murders of The Fianna | 15-28 | The Wild Hunt | | 2021 | Stygian Fox | Call of Cthulhu (Classic) | 1920s |
| The Weapons of Hudson and Brand | 88-94 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| The Wild Hunt | 62-64 | The Wild Hunt | | 2021 | Stygian Fox | Call of Cthulhu (Classic) | 1920s |
| The World of Hudson and Brand | 12-18 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
