Books like The Substitute (Replica 13) by Marilyn Kaye

A heart-wrenching tale of forbidden love, survival, and the consequences of The Program in a bleak future world where teen suicide is a global epidemic.

When a strange new substitute teacher arrives at a sixth‑grade school, two students discover he is an alien with a sinister plan that could end their class. They must act quickly to save their classmates from an extraterrestrial threat.

A juvenile science‑fiction thriller that tackles themes of identity and cloning.

When Emmaline Beaumont’s father builds a ghost machine to summon the dead, she hopes it’ll bring her mother back. Instead, her father becomes consumed by the device, leaving Emmaline feeling unseen and forgotten.

A teenage girl and four male runaways, all victims of genetic experiments, must uncover the truth behind their erased memories and secret identities.

When a new substitute teacher comes to Bear Country School, the cubs learn that appearances can be deceiving.

"After the death of her beloved grandmother, a Cuban-American woman travels to Havana, where she discovers the roots of her identity--and unearths a family secret hidden since the revolution ... Havana, 1958. The daughter of a sugar baron, nineteen-year-old Elisa Perez is part of Cuba's high society, where she is largely sheltered from the country's growing political unrest--until she embarks on a clandestine affair with a passionate revolutionary ... Miami, 2017. Freelance writer Marisol Ferrera grew up hearing romantic stories of Cuba from her late grandmother Elisa, who was forced to flee with her family during the revolution. Elisa's last wish was for Marisol to scatter her ashes in the country of her birth. Arriving in Havana, Marisol comes face-to-face with the contrast of Cuba's tropical, timeless beauty and its perilous political climate. When more family history comes to light and Marisol finds herself attracted to a man with secrets of his own, she'll need the lessons of her grandmother's past to help her understand the true meaning of courage--and what it means to be Cuban"--

Amy discovers that the fading crescent moon mark on her shoulder signals sinister changes shared by her sister clones, forcing her to confront the dangers of cloning and the desire for normalcy.

A playful alphabet picture book that follows a class of kindergartners as they learn the letters while coping with their teacher’s flu and a substitute visitor.

A quirky new substitute teacher named Mrs. Wolfowitz, who may be a werewolf, takes over Zack's class and delights in homework, sparking humor and mystery in this children’s tale.

When a stray dog named Mr. Rover steps into a classroom, the students discover a new, lovable substitute teacher who turns learning into an unexpected adventure.