From publisher blurb:
After a small lull, we're back with the Trio of Subclasses. Contained here are three Rogues to fulfil some popular niches among the deviant class.
The Flagellant, perhaps the most outlandish of the options here. These are divine rogues, using the Gift of Magic channel divinity that the Templar fighter used in Trio of Fighters. They self flagellate to provide some of the more sinister virtues and sins.
The Gambler, a classical Roguish archetype who gamble in combat with their sneaky strikes as often as they do at the games table.
And the Scoundrel, a street tough gangbanger type who uses dirty tricks and leverages his network to gain the upper hand.