Highly recommended that you read the prequel first.

Clovenworth Prison has been regarded for years as the most escape-proof facility in Equestria. Layers upon layers of both physical and magical security, a troop of well-trained and equipped Guards, and three miles of stormy, choppy sea separate the worst of Equestria's criminals from the rest of the country.

Until Zugzwang entered the walls of the Prison. Within hours of his imprisonment, Zugzwang successfully stages a mass breakout and overtakes the entire island, leaving Phillip Finder and Shining Armor trapped with an army of bloodthirsty criminals. But there's more to this plan than just a breakout attempt.

With aid from Flash and Twilight, can Phillip and Shining band together to stop Zugzwang, or are they doomed to die in Clovenworth Prison?

The Phillip Finder series
The Pony in the Gray Trilby
The Everfree Forest Affair
Time Flies
The Blue Moon Brings Death
Letters to a Candymare
The Face in the Darkness
Checkmate
Secret of the Mare Lisa
The Sun Falls
Clockwork
Behind Locked Doors
Siege of Clovenworth
The Silent Fugitive
Curse of the Taverneigh Blue
Mystery on the Mareish Moors
The Grilled Cheese and the Muletese Falcon
Trifle Not With Monsters
The Fillydelphia Solution
The Sydneigh Ritual
Endgame