The film revolves around the mystery of Samuel Maleski's death. After Sandra’s defense establishes that Samuel suffered from severe depression and had previously tried to overdose on aspirin, the prosecution introduces a secret audio recording made by Samuel the day before he died.
The recording reveals a violent, raw argument. Samuel accuses Sandra of monopolizing his time, plagiarizing his book idea, and imposing her lifestyle and language on him. Sandra counters that he is projecting his own creative failures and writer's block onto her. The argument devolves into physical violence, glass breaking, and slaps.
The turning point occurs when Daniel asks to be separated from his mother before his final court appearance. Recalling his mother's mention of Samuel vomiting white pills months earlier, Daniel intentionally feeds aspirin to his guide dog Snoop, causing Snoop to show identical symptoms of poisoning. This confirms to Daniel that Samuel had indeed attempted suicide in the past.
Taking the stand, Daniel relates a memory of a car ride where Samuel spoke about Snoop’s eventual death, using the dog as a metaphor for preparing oneself for loss. This testimony sways the court, resulting in Sandra's acquittal.
However, the ending provides no simple triumph. Sandra returns home feeling hollow. The film leaves it ambiguously clear that whether Daniel told the absolute truth or constructed a plausible story to protect his mother, both mother and son must now live in the shadow of that choice. The final image shows Sandra lying in bed, seeking comfort not from human reassurance, but by holding Snoop.