Elena Rosales has busted her ass to get into a good college. She's the only one in her family ever to attend, and expectations are high. No pressure. But Elena's got this one in the bag, because she's as dependable as the molecules she studies, as reliable as the chemical reactions that comfort her in their predictability - until they don't.

Elena has always wondered why her mother abandoned her on her first birthday. It's not until she turns 18 and her chemistry experiments go berserk that she learns the truth: Her mother wasn't human, and the Fae are willing to harm those Elena loves if she doesn't use her power over the elements to cure them of a deadly disease.

Derek, Elena's brooding neighbor, isn't the friendliest guy, but he has access to an off-hours lab and is willing to help Elena create the antivirus. He has his own secrets to keep, and this business Elena is mixed up in could blow his cover. But when Elena and Derek get together, more than chemicals spark fire - and they soon discover just how complicated attraction can get when they find themselves on the other side of the portal, fighting for survival. Lives collide and allegiance and love are tested in Fates Divided.