It is a shame when a play does not assume it's audience are intelligent enough to draw their own conclusions, and instead seeks to control their approach entirely.
Baczkiewicz does not overly rely on the well known supernatural monsters such as werewolves, which can create an overblown and predictable tale but delves deep into folklore. Soon a thorn bush, a forest, the ringing of a church bell can all be sinister to the listener.
Because of the lack of visuals you have to make them up in your own head, and that is the snuggest place any story can ever fit. It's also the most scary.