Books with title Pull No Punches

Gurveer loves going to martial arts lessons with Donovan, but their first exam is approaching and he's feeling the pressure. He's never been good at tests. To his annoyance, Abhaya, his younger sister, and her friend, Gabriella, seem to be looking forward to it!Finding he must keep a dark secret, Gurveer's nerves are stretched to snapping point. One wrong word could get him kidnapped, or even killed. What can he do about the stranger dressed in black? Is there anyone he can trust?