Hold Tight by Harlan Coben Orion, HK$94 After years spent building a best-selling series of crime novels starring Myron Bolitar, Harlan Coben decided to go it alone - or stand alone - in 2001 with Tell No One, now a marvellous French-language film. Rather than cut his sales, the book made Coben a richer writer in all senses of the word. Hold Tight will do nothing to dent either his commercial or critical standing. A twisting and humane story, it combines Coben's twin strengths as a keen observer of human relationships and a 21st-century thriller writer par excellence. Mike and Tia Baye are anxious parents. Their teenaged son, Mike, has withdrawn following the suicide of a school friend. Their response is to install a spyware program on his computer and a tracking device in his phone. This central plot is supported by two others: one involves a brutal serial killer known as Nash; the other another pair of mistrustful parents whose son needs a kidney transplant. Coben weaves all these together into a head-spinning blockbuster. Along the way he explores surveillance, secrets, the family, childhood, small-town life and, of course, the truth. And he never forgets to entertain as he goes.