After a high-powered real estate developer is killed by a moving subway train, his widow hires McCall to investigate his death. Meanwhile, Aunt Vi and Dee visit an old neighbor living in a nursing home who may need their help.

After Mel is reunited with her brother Matthew, McCall helps him blow the whistle on his former unit's unethical practices before it's too late. Meanwhile, Aunt Vi and Trish's relationship becomes fractured by Vi's need to protect McCall's true identity.