Coc is after us

Cammie finally sees Zach but before they can get sometime to talk there's a code black in the academy, there's people cammie didn't expect to see ,josh dee-dee , and a mysterious girl who reminds Cammie of someone,but as soon as answers are given more questions rise up and they have to run or get killed what will they do to survive and who is this girl can she be trusted is she a friend or a very deceiving enemy? to what end will the coc go to capture Cammie??