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Sinis was a bandit and Greek demigod son of Poseidon who killed his victims by flinging them from trees. He was killed by Theseus.

Percy Jackson's Greek Heroes

Theseus Tree

Theseus holding down one of Sinis' trees

When Theseus is on his way to Athens, he runs into Sinis, who tries to fling Theseus out of a tree. However Theseus tricks Sinis into tying himself to a tree and, with the help of Sinis’ daughter Perigune, flings the bandit to his death.

The Heroes of Olympus
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Related Content: Rick Riordan | Percy Jackson and the Olympians | Demigods and Monsters | The Ultimate Guide | The Demigod Files | The Demigod Diaries | The Son of Sobek | The Singer of Apollo | The Staff of Serapis | Percy Jackson's Greek Gods | Percy Jackson's Greek Heroes | The Crown of Ptolemy | Demigods & Magicians | Demigods of Olympus | Percy Jackson Demigod Collection
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