Riley Malloy, vet tech and dog whisperer, stands in the way of a desperate criminal. Easy fix. Kill Riley. After a former coworker dumps a feral cat inside a carrier on Riley's porch with only a cryptic note attached, the coworker is murdered. Riley is the last person alive who can identify the criminal. The killer closes in. Riley is attacked, kidnapped, and left for dead, but she does not intend to die.