Hands That Heal — J.W. Lucas

A rash of drug overdoses and a mounting death toll has the normally tranquil Berkshire communities in a state of near panic. Most alarming is the number of deaths resulting from the abuse of powerful pain medicines, not heroin.
When a prominent Congressman's granddaughter is among four young people who are murdered during a drug-fueled party, the crisis explodes with headlines across the country. The Congressman tells the press her death was a personal attack against him intended to sabotage his plan to run for the Presidency.
Assigned by the US Attorney's office to investigate, Daryl uncovers a clandestine drug trafficking scheme, a shadowy pharmaceutical company run by medical professionals, a power-seeking politician who is no stranger to murder, and works through a death threat as he sorts out whose hands heal and whose hands kill.