Jacqueline Rayner 
Siren Song [PDF ebook] 

Sasha hasn’t said a word since her brother mysteriously disappeared. Was it an accident — or does Sasha know something she’s not telling? Zoe is determined to find out the truth, no matter who gets hurt. But some secrets should be left alone… Between the Lines is set across a range of locations — in familiar places such as schools and homes as well as spanning the Yorkshire moors, the Mediterranean and South India. Designed expressly for reluctant and struggling readers, the stories in this series feature mature and serious themes touching on abandonment, addiction, loss, homelessness, love, war, dystopia and refugees.