Amelia's ghost is gone and the ley line under Sugar & Sorcery is restless enough for ordinary townsfolk to feel it. The Harbor Council announces a grand heritage celebration meant to "heal" Moonfern Cove, but Iris Calder recognizes the date. It is the anniversary of the original Calder bloodline pact.A young researcher disappears during the festival and is recovered under the old bridge wrapped in sigil-marked rope. A trusted shop owner is killed in a "robbery" that steals only secrets. Then Iris's newly discovered half sister, Nadia Rios, survives an attempt on her life that makes one thing clear. The Regent needs Calder blood alive to rewrite the contract.To stop him, Iris must steal the original wording, survive a trap in the tunnels, and turn the pact's language against its master. Lucas risks everything. Sienna and Caleb refuse to step back. Lumi chooses loyalty over freedom.This is not a final case. It is a final reckoning.