The silent children

"The boy studied the bruise turning yellow at the base of his neck. With quick fingers his mother tightened his tie, and pulled his collar high above it. Her eyes alone said, We will not speak of this... Years later, a man is found shot dead in a local park. On his phone is a draft text: I can't keep this secret any longer. The recipient is unnamed. Detective Robyn Carter knows this secret is the key to the case, but his friends and family don't...