The Ragpicker King by Cassandra Clare (Paperback)

After a massacre shakes the royal court, Kel Saren—body double to Prince Conor—is tasked with hunting traitors. His search leads him deep into Castellane’s criminal underworld, where only the Ragpicker King may hold the key to a dark conspiracy. As Kel follows clues through the city’s poorest quarters, he must navigate dangerous secrets and betrayal that could topple the royal family.

Meanwhile, Lin Caster, who has claimed to be the prophesied Goddess Reborn, faces her greatest test. Her people’s leader demands proof of her power, and failure means exile.
Prince Conor returns, asking Lin to use her healing magic to cure his father’s madness. But the king is under the grip of a dangerous, ancient magic—one that draws Lin in despite her attempts to resist.

As tensions rise in Castellane, Lin and Kel must decide who they can truly trust. Deception, power, and love weave together in a world where a single mistake could mean death—or worse.