Dark Chemistry - Catherine Lee

Everyone is entitled to a voice, but has a protest group turned to murder to make themselves heard?
A fatal stabbing in a local park appears to be a mugging gone wrong – but Detective Charlie Cooper suspects there's more to this murder than meets the eye. The victim worked at a local pharmaceutical plant, where protesters against the company's manufacture of vaccines are becoming increasingly vocal. The victim was the CEO's nephew, and soon a clear message is sent – stop making vaccines, or more blood will be shed.
Lab Technician Leo McCarthy loves his job at Lighthouse Pharmaceuticals. Processes and procedures, scientific testing, black and white – all things Leo's difficult mind can understand. But when his friend is murdered, Leo's world is thrown into a type of chaos he thought was long behind him.
A police procedural tale that tackles one of society's most dividing issues, Dark Chemistry is the fourth in Catherine Lee's page-turning series. Cooper and Quinn are back in another rollercoaster mystery, and this time murder isn't the only thing rocking Cooper's world.
The Detective Charlie Cooper Mysteries Complete Series Reading Order:
Prequel Novella: Dark City
Book 1: Dark Heart
Book 2: Dark Past
Book 3: Dark Secrets
Novella: Dark Paradise
Book 4: Dark Chemistry
Book 5: Dark Edges
Book 6: Dark Country
Book 7: Dark Justice