From publisher blurb:
Power.
Sorcerers are born into it. Wizards spend their lives in rigorous study for it. Witches gain it through devotion to their patron. But some who seek power are unlucky enough to have been born mortal, with no access to or desire for arcane education; ordinary people who know little of witchcraft’s ancient traditions. Unlike witches, who are called by their patrons, warlocks seek out powerful beings to grant them the power they crave or desperately need.
That power can now be in your hands.
Included in these 30 pages is the new Warlock class for the Pathfinder RPG.
Also inside are new rules on Grimoires, the ancient and living texts of warlocks.
Details on new warlock pacts, including unique powers and spells.
Examples of several new warlock Patrons.
New feats
New hexes
New spells
And a new warlock NPC