Anyone for tennis? Lu's mother Genevieve is back. She introduces Lu to her new beau, Frederick Greenwood who owns a tennis club.
When Frederick finds out that Lu is a private detective, he has a case for her, he has received a death threat.
Lu refuses to take on the case, she needs to spend time revising for her private investigators exam. Frank though will not turn down money and Frederick is prepared to pay double if they keep things discrete.
Frank goes undercover as a learner tennis player. However pretty soon Frederick gets a ransom demand and a club player is poisoned.
Another enjoyable lighthearted episode. Lu frets over her exams and needs to deal with issues with her mother who does not seem to be too impressed with her detective lark.
There are several likely suspects, it is a nice enough mystery and with Genevieve and Frederick, the outlook is a love game.