At first, the novel seems to have all the characteristics of a paranormal story. The protagonists are two children, who gradually grow up to become young adults, that live far apart, have never met and have no way of doing so. Nonetheless, they talk to each other in their heads, especially in stressful situations. She is the adopted daughter of the perfect family, he is the son of a drug addict, and, while still a teenager, he joins a criminal gang. Then, one day, through their special mental connection, he hears his friend's desperate cry for help, as she has been kidnapped... then he hears nothing more. The silence of the mind, which he experiences for the first time in his life, is devastating. And here the novel changes, because the paranormal gives way to a complex psychological plot that deals with loss, childhood trauma and how a young mind tries to cope with this and to heal itself in some way. There are a few too many complications, especially in the second half, but apart from that, this is a truly unusual and surprising novel.

The silent Sound of Chaos by Kristina Circelli.
A silent call for help began the friendship between two children. A bond unlike any other kept them together. 
Finn was just a kid when he first heard Snow’s voice inside his head, two children in need of a friend and finding one in mysterious strangers. Never meeting in person, the pair grows up as opposites – Finn the boy who loves to get in trouble and works for the toughest drug lord in town, Snow the good, sheltered girl who wants to be a doctor. 
The bond built upon a strange ability to hear each other’s thoughts is threatened when Snow is abducted, her screams for help consuming Finn’s mind until they disappear completely, submerging him in a terrifying silence he’s never known before. Now it’s up to Finn to save her, led only by Snow’s sporadic thoughts as she floats in and out of consciousness. 
But the search for Snow leads him to a truth he isn’t prepared to face, a truth that has the power to unravel his entire world. The people he thought he knew, the life he thought he’d made, the best friend he thought he could protect – all point toward a brutal reality should he fail. 
And as Finn struggles to find Snow before she slips away, he must fight to keep that reality out, lest he let the chaos in.
This was a very good read. I liked finn and snow. 4*.