No Holds Barred — Lyndon Stacey

When ex-police dog handler Daniel Whelan is asked by his former boss to help a friend who is struggling to run her husband's haulage company while he is recovering from a vicious attack, he and his German shepherd, Taz, rapidly find themselves attracting the wrong sort of attention. Daniel investigates, and soon finds evidence of some very nasty business indeed -- but after several violent warnings, he begins to wonder . . . has he bitten off more than he can chew?