light spoilersReviewed 8/21/2026

The Sinking City 2 Investigations

Direct answer

The eight optional investigations are The Inheritance, The Other Gods, The Red Press, The Siren's Call, The Whisperers, The Vault, The Drowned, and The Damned.

All eight investigations

  1. The Inheritance — connect the apartment and radio-shop clues, then open the wall safe.
  2. The Other Gods — finish the optional Redemption Church Trident ritual.
  3. The Red Press — guide under verification; the exact evidence-connection gate is not yet independently corroborated.
  4. The Siren’s Call — pair the hotel safe clues and open Room 301’s safe.
  5. The Whisperers — resolve the three Wireless Room frequencies.
  6. The Vault — gather the hospital storage digits and open the late storage gate.
  7. The Drowned — solve the corpse-held symbol locker in the Fish Market.
  8. The Damned — use the sixteen-punishments evidence at Salt Storage.

How investigations complete

Collect the named evidence in the local area, connect the related records in the Investigation Space when required, then perform the physical action at the lock or mechanism. The catalog supplies the eight display names only; each child page corroborates its actionable route separately.

If an investigation will not close

Reopen the Investigation Space and check for an unconnected local record. A correct physical input may open a container without closing the named investigation if its evidence grouping is incomplete.

Sources

Reviewed: 8/21/2026