A bearded man bumped into a veterinarian clinic, collapsing on the ground. Despite all efforts, he died shortly after and detectives realized he was beaten to death. He was a bum who used to eat leftovers outside restaurants. He lived among garbage in a dark alley where a CCTV footage proved the beating: two people with pipes hit him very hard. His only next to kin, his sister, paid a visit to the precinct; she described him as a sick person, recently discharged from the army for his mental disease. Perps sold magazines door to door in order to steal something inside apartments and they were easily caught by police. Pending trial, one of them (Ben Curtis) was recognized as an Iraqi war veteran (discharged due to brain injuries suffered in battlefield) and he committed the crime because he was in one of his moods...
McCoy was shocked noticing crappy soldiers condition at the hospital as well as how dirty the place was; money shortage they said, anyway nothing related to the case. I've already seen these post traumatic disorders in several Vietnam movies, nothing new under the sun.