The climax of the story is when Peter,Molly and tink arrive at the Return and save the star stuff from lord ombra and lord ombra is for once terrified of the star stuff and it's power he warns nerezza and slank that if they got anywhere near it they can die instantly.then Peter gets shot by slang when he tries to reopen the trunk after it was closed in the middle of the return.

Climax

The return is when all the star stuff that has been taken or has escaped the chamber is returned to the starcatchers