The Chain by Adrian McKinty

The phone call that Rachel receives is worse than every parent's nightmare. Her teenage daughter, Kylie, has been kidnapped and, in order for Kylie to be released, Rachel must kidnap someone else's child. Kylie then will only be free when those parents kidnap a child also. As Rachel finds out, this is called "The Chain" and you don't want to break the chain.... A fast-paced readalike for Harlan Coben and Maile Meloy's Do Not Become Alarmed. It will be published in July.