The command is given, "Rig for Red" and they prepare the submarine for silent running. The brand new Virginia Class sub from Block V speeds along, deep in the South China Sea on a direct path to San Francisco.
Cleopatra Wong is resting in the infirmary recovering from the rough treatment during captivity.
Detective Wong is in San Francisco in the 1940's uncovering the use of radio broadcasts to create disinformation that is then used as an alibi.
This is all I know...