Behind the Curtain is the second book in the Echo Falls mystery series by best-selling crime novelist Peter Abrahams.

During all this, Ingrid's brother, Ty, starts taking steroids, an illegal drug sold by the Krackens (her not-so-friend, Chloe's servants).

She writes a note on Carl Kraken Jr's janitor desk to meet them at the tree house she and Ty used to hang out in.

Kirkus Reviews wrote "In a literature notoriously light on solid mysteries, Abrahams’s second outing for kids stands out as a deliciously plotted, highly satisfying adventure.

"[1] while Publishers Weekly, in reviewing the audio version, stated "youngsters who have never read a Sherlock Holmes story will be won over by the perilous adventure so expertly presented.