Vigil

When a crew member is found dead on the HMS Vigil, Detective Silva boards the sub to investigate.

With the Vigil exposed and the crew racing to repair a shutdown, Amy continues her investigation.

After Kirsten discovers a Navy cover-up, Amy questions who she can trust on the Vigil.

Kirsten closes in on the killer, but their capture reveals a threat; Amy makes a shocking discovery.

The Vigil is forced into lockdown as disaster strikes; Kirsten hunts for the source of the threat.

The Vigil’s crew must identify the traitor; Kirsten chases down the traitor’s accomplice.