Barnaby Jones (1973)

S3E9 Dark Homecoming

A successful singer returns to her hometown to perform, only to unexpectedly encounter her ex, who is now in a relationship with a very insecure woman. When the new girlfriend feels threatened by the singer's presence, she confronts her, leading to an altercation where the singer accidentally knocks her out. Concerned about the fallout, the singer's manager, who secretly has feelings for her, tells her to leave, claiming the girlfriend is dead. To keep the situation under wraps, he revives the girlfriend and sneaks her out, proposing that the singer pretend to have caused the incident, hoping to protect her reputation and get closer to her.