Here is the list of the 10 most circulated books so far this year.

 FIC MEY Bella must choose between her friendship with Jacob and her relationship with Edward, both vampires, but when Seattle is ravaged by a mysterious string of killings, the three of them need to decide whether their personal lives are more important than the well-being of an entire city.

FIC HOP Kristina Snow is the perfect daughter, but she meets a boy who introduces her to drugs and becomes a very different person, struggling to control her life and her mind.

 FIC HOP Three teens who meet at Reno, Nevada's Aspen Springs mental hospital after each has attempted suicide connect with each other in a way they never have with their parents or anyone else in their lives.

 FIC MEY When the Cullens, including her beloved Edward, leave Forks rather than risk revealing that they are vampires, it is almost too much for eighteen-year-old Bella to bear, but she finds solace in her friend Jacob until he is drawn into a "cult" and changes in terrible ways.

 FIC PIC  This is the emotionally riveting story of a family torn apart by conflicting needs and a passionate love that triumphs over human weakness. Anna is not sick, but she might as well be. By age thirteen, she has undergone countless surgeries, transfusions, and shots so that her older sister, Kate, can somehow fight the leukemia that has plagued her since childhood. The product of preimplantation genetic diagnosis, Anna was conceived as a bone marrow match for Kate -- a life and a role that she has never challenged...until now. Like most teenagers, Anna is beginning to question who she truly is. But unlike most teenagers, she has always been defined in terms of her sister -- and so Anna makes a decision that for most would be unthinkable, a decision that will tear her family apart and have perhaps fatal consequences for the sister she loves. My Sister's Keeper examines what it means to be a good parent, a good sister, a good person. Is it morally correct to do whatever it takes to save a child's life, even if that means infringing upon the rights of another? Is it worth trying to discover who you really are, if that quest makes you like yourself less? Should you follow your own heart, or let others lead you?

 FIC HOP Seventeen-year-old Pattyn, the eldest daughter in a large Mormon family, is sent to her aunt's Nevada ranch for the summer, where she temporarily escapes her alcoholic, abusive father and finds love and acceptance, only to lose everything when she returns home.

 FIC MEY The fourth and final book in the teen vampire Twilight Saga continues the story of the human Bella and the vampire Edward whose love is threatened by their difference, a werewolf named Jacob, and other outside influences.

 FIC KID A remarkable story about mothers and daughters and the women in our lives who become our true mothers, this is a stunning debut whose rich, assured, irresistible voice gathers us up and doesn't let go, not for a moment.

 FIC MEY When seventeen-year-old Bella leaves Phoenix to live with her father in Forks, Washington, she meets an exquisitely handsome boy at school for whom she feels an overwhelming attraction and who she comes to realize is not wholly human.

 FIC HIA Roy, who is new to his small Florida community, becomes involved in another boy's attempt to save a colony of burrowing owls from a proposed construction site.