'Peter' looks and feels like a theatrical production - a staged one. The camera lingers on scenes well past the edit point of most films and scenes between actors usually stay on a mid-level shot instead of at a minimum cutting between close-ups. The technique, if it is a technique and not just a sign of inexperience on the part of the filmmakers, is surprisingly effective in some of the dramatic scenes as we stay with the actors. You don't feel like you're sharing the moment, but you do feel like you're in the second row at the theatre watching two actors pour their hearts out.
Good performances by most of the cast and look for the guy playing the doctor - I've seen him in some 80's sitcom re-runs like "Benson" - which is as close as any of the cast comes to be "recognizable."