Midnight Shadows by Emerson Knight

Ethan’s losing control. Past choices are coming back to haunt him, and an old curse threatens to drive him from the pack. As if Ethan doesn’t have enough to worry about, Josh is helping Sky dabble in dark magic, drawing the attention of every dark witch from miles away.

While Ethan tries to shield her from the consequences of practicing dark magic, an unknown enemy has come looking for revenge, and an alliance between the fae and the witches threatens to draw the pack into all out war.