| Name | Class | C. | Type | Icons | Traits | Set | Encounter |
|---|---|---|---|---|---|---|---|
| The Midnight Masks | Mythos | Scenario | Core Set 120 | The Midnight Masks 1 | |||
| Predator or Prey? | Mythos | Agenda | Core Set 121 | The Midnight Masks 2 | |||
| Time Is Running Short | Mythos | Agenda | Core Set 122 | The Midnight Masks 3 | |||
| Uncovering the Conspiracy | Mythos | Act | Core Set 123 | The Midnight Masks 4 | |||
| Your House | Mythos | Location | Arkham. | Core Set 124 | The Midnight Masks 5 | ||
| Rivertown | Mythos | Location | Arkham. Central. | Core Set 125 | The Midnight Masks 6 | ||
| Southside: Historical Society | Mythos | Location | Arkham. | Core Set 126 | The Midnight Masks 7 | ||
| Southside: Ma's Boarding House | Mythos | Location | Arkham. | Core Set 127 | The Midnight Masks 8 | ||
| St. Mary's Hospital | Mythos | Location | Arkham. | Core Set 128 | The Midnight Masks 9 | ||
| Miskatonic University | Mythos | Location | Arkham. | Core Set 129 | The Midnight Masks 10 | ||
| Downtown: First Bank of Arkham | Mythos | Location | Arkham. | Core Set 130 | The Midnight Masks 11 | ||
| Downtown: Arkham Asylum | Mythos | Location | Arkham. | Core Set 131 | The Midnight Masks 12 | ||
| Easttown | Mythos | Location | Arkham. | Core Set 132 | The Midnight Masks 13 | ||
| Graveyard | Mythos | Location | Arkham. | Core Set 133 | The Midnight Masks 14 | ||
| Northside | Mythos | Location | Arkham. | Core Set 134 | The Midnight Masks 15 | ||
| Hunting Shadow | Mythos | Treachery | Curse. | Core Set 135 | The Midnight Masks 16-18 | ||
| False Lead | Mythos | Treachery | Core Set 136 | The Midnight Masks 19-20 |