The next day, he goes about his daily routine, momentarily forgetting the murder as he calls out to his mother's closed bedroom door.

Peter lies to his sister Vickie about their mother's whereabouts and vents his frustration through phone calls to Edward's answering machine.

Peter deceives Vickie about their mother's situation and discusses his plans to redecorate the house, charging the expenses to his credit card.

Peter reveals his tropical fish, Adam and Eve, to his online viewers, showcasing his anticipation for Edward's arrival.

He consumes a large amount of medication but vomits and fails to end his life by inhaling exhaust fumes.

Peter eats breakfast, closes the mirror, and shares the news of his brother Bobby's death with his viewers.

[5] Sheri Linden of The Hollywood Reporter praised the film and wrote, "What makes the disturbing story gripping, beyond Oyelowo’s spellbinding performance, is its humor, defining compassion and incisive imagery.

Club wrote that "the narrow perspective creates the disconcerting intimacy on which Nightingale thrives, but Lester’s strict adherence to it often feels compensatory and makes the film come across more like a conceptual exercise than a story.

"[7] Matthew Gilbert of The Boston Globe wrote, "What could have been an evocative journey into the mind of a lost veteran, as he opens up his thinking across a one-man show set entirely inside his house, is more like a quasi thriller revolving around a very mad hatter.

[9][10] Alessandra Stanley of The New York Times wrote that "Mr. Oyelowo gives a riveting, disorienting and suspenseful tour of an unraveling mind".