Coin Series by E.C. Myers

Epraim is horrified when he comes home from school one day to find his mother unconscious at the kitchen table, clutching a bottle of pills. Even more disturbing than her suicide attempt is the reason for it: the dead boy she identified at the hospital that afternoon--a boy who looks exactly like him. While examining his dead double's belongings, Ephraim discovers a strange coin that makes his wishes come true each time he flips it... moreEpraim is horrified when he comes home from school one day to find his mother unconscious at the kitchen table, clutching a bottle of pills. Even more disturbing than her suicide attempt is the reason for it: the dead boy she identified at the hospital that afternoon--a boy who looks exactly like him. While examining his dead double's belongings, Ephraim discovers a strange coin that makes his wishes come true each time he flips it. Before long, he's wished his alcoholic mother into a model parent, and the girl he's liked since second grade suddenly notices him. But Ephraim soon realizes that the coin comes with consequences --several wishes go disastrously wrong, his best friend Nathan becomes obsessed with the coin, and the world begins to change in unexpected ways. As Ephraim learns the coin's secrets and how to control its power, he must find a way to keep it from Nathan and return to the world he remembers. (For ages 12 & up) less

Ephraim thought his universe-hopping days were over. He's done wishing for magic solutions to his problems; his quantum coin has been powerless for almost a year, and he's settled into a normal life with his girlfriend, Jena. But then an old friend crashes their senior prom: Jena's identical twin from a parallel world, Zoe.Zoe's timing couldn't be worse... moreEphraim thought his universe-hopping days were over. He's done wishing for magic solutions to his problems; his quantum coin has been powerless for almost a year, and he's settled into a normal life with his girlfriend, Jena. But then an old friend crashes their senior prom: Jena's identical twin from a parallel world, Zoe.Zoe's timing couldn't be worse. It turns out that Ephraim's problems have just begun, and they're much more complicated than his love life: The multiverse is at stake—and it might just be Ephraim's fault.Ephraim, Jena, and Zoe embark on a mission across multiple worlds to learn what's going wrong and how to stop it. They will have to draw on every resource available and trust in alternate versions of themselves and their friends, before it's too late for all of them.If Ephraim and his companions can put their many differences aside and learn to work together, they might have a chance to save the multiverse. But ultimately, the solution may depend on how much they're willing to sacrifice for the sake of humanity...and each other. less