Upper West Side neighbors Charles, Oliver and Mabel bond over a shared love of true crime. When a fellow resident dies in their building, the trio determine to solve the mystery and record an accompanying podcast.
Mabel brings her new friends (and an old one) to her childhood home to meet her mother. Meanwhile, Detective Williams starts to have her own doubts about the case as she prepares for motherhood.
With the investigation scratching at a web of old crimes originating inside the building, a mysterious young man turns the tables to spy on Charles, Oliver and Mabel.
With the residents growing upset at the building's negative publicity, the trio faces a revolt. Charles is visited by an old colleague who sheds light on his past.