Captain Luke MacArthur has his orders. Hunt down two of the quietest submarines in the world. A deadly weapon of the Soviet Union in the cold war.The Kilo class. It’s known as The Black Hole for a good reason.Iran intends to use them to choke off the Gulf oil supply. Their mission; blockade the Straits of Hormuz.Dark fate chose the encounter point; the straits at the Southern entrance to The Red Sea, known as “The Gate of Grief.”He held an ace, command of the most powerful submarine in the Royal Navy, HMS Holy Ghost.He faces a personal dilemma; the sultry Savita, his Weapons officer is sending out flirtatious signals. The loneliness of Command tells him he can’t respond, even though he wants to. Luke knows he’s in danger of becoming a moth to her flame.Join the crew of the Holy Ghost and help Luke hunt down shadows in the night. Kilo class. The Black Hole.