Unfortunately, you are already engaged in a case
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From: Ambition: Nemesis – Scathewick's Accounts
Action Cost: 0
Game Instructions: Resolve your current Case to begin a new investigation into Gloriana or Cumberbold.
Unlocked with 
Engaged in a Case:
Locked with both 
A Clue: The Purveyor's Confession and A Clue: Cumberbold's Stamp (You still have at least one clue left to uncover.)
