There are 3 books in the The Half Bad Trilogy series. The newest book is Half Lost which came out in 2016.

1
Half Bad

Book cover of Half Bad
The inspiration for the Netflix series The Bastard Son & The Devil Himself

“An enthralling fantasy in the Harry Potter tradition.”—Time magazine

“A bewitching new thriller.”—The Wall Street Journal

In a modern-day England where two warring factions of witches live alongside humans, one sixteen-year-old boy is trapped between the two…
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2
Half Wild

Book cover of Half Wild

The stunning sequel to Sally Green's breathtaking debut novel - HALF BAD.

After finally meeting his elusive father, Marcus, and receiving the three gifts that confirm him as a full adult witch, Nathan is still on the run. He needs to find his friend Gabriel and rescue Annalise, now a…

3
Half Lost

Book cover of Half Lost

The third and final instalment in the breathtaking Half Bad series by Sally Green.

Nathan Byrn is running again. The Alliance of Free Witches has been all but destroyed. Scattered and demoralized, constantly pursued by the Council's Hunters, only a bold new strategy can save the rebels from total defeat.…