When his 8-year-old son is abducted, a widowed crime writer looks to his estranged father, a retired former police detective, for help, only to discover a connection with the decades-old case of a convicted serial killer known as "The Whisper Man."

When her tranquil life on a remote island is shattered by the return of her vengeful former captain, a skilled ex-pirate must confront her bloody past and unleash her deadly talents to save her family from a ruthless siege.