The act isn't expressly shown, however it is heavily implied. Also, the victim is momentarily visible being wheeled away on a stretcher, but the scene is very short.
Prescription drugs are seen and used throughout. They are also abused on two occasions. However, no "hard" drugs are visible or referenced within the series.
A few hunted rabbits and a single dead bird are shown in various scenes throughout the series. A cat's corpse is shown in one scene, but never again afterwards.
The series centers around a car accident victim, and bits and pieces of the crash are shown throughout all 9 episodes, as well as the whole event in a single episode followed up by another full car accident.
See: "Is there amputation?" "Does a car crash?" Also, someone is shown going through a windshield a handful of times (the same scene, reviewed in different episodes).