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.

The group begins researching the victim. Meanwhile, Mabel's secretive past starts to be unraveled.

Oliver employs his theater director skills to analyze the case. Charles and Mabel question an obsessive cat lover.

Believing the murderer might be a famous resident who is difficult to access, the group seeks advice from a renowned podcasting host.

Mabel slips away on a solo mission tracking the victim's final days. Suspicious, Charles and Oliver follow her.

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.

Hitting a dead end, the group calls for reinforcements in the form of their podcast's Superfans.

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.

In the season finale, the trio races toward a resolution while their own lives are put in danger.