As Luella Shakespeare grows suspicious that her husband-to-be Clive Brenton is cheating on her, she enlists the help of a private detective called Frank Hathaway to uncover the truth. When they start investigating Clive's past, Shakespeare proves to be a detective by nature.
When Luella and Frank get a case to investigate an incident at a rest home where Penelope and Owain are staying, shocking revelation and past murders provide a clue when Penelope is killed.
When hitmen visit the undertaker Peter Quintus and give him an ultimatum, threatening to kill him in 24 hours, he enlists the help of Luella and Frank to figure out the identity of the hitmen. As clues seem to point towards Peter's ex-wife, she reveals he owes her money.
As Magician Laurence Pross faces trouble when a person of the audience dies in a stage trick, he enlists the help of the detectives, believing his arch-enemy of a magician is the one behind sabotaging his show.
When the mayor is murdered, the public point an accusing finger at a criminal known as Billy the Brick. Billy then enlists Luella and Frank's help to prove his innocence.
When actress Sally Balthasar receives death threats following her new feminist take on Romeo and Juliet, Luella and Frank try to figure out who wants Sally dead.
When two shop-owners approach the duo when an employee fakes an injury to get money, Frank gets dragged into the case as accusations against a person who claims to be his uncle are made. Frank sets out to clear his name and uncovers a mystery in the process.
When Hamish Kingly approaches the detectives, saying he had a premonition about a murder, they attend the retreat run by his mother and step-father just in case. Things take a turn when Hasmih's therapist is killed and he gets arrested.
When Volatile Len Tekler accuses his rival chef of purposely trying to get a food critic to write him a bad review, things mount when Tekler is found dead, and the duo set out to crack the case, despite an old disagreement between Tekler and Luella.
When Lady Tanya Bede's daughter goes missing along with a priceless necklace and a ransom is demanded, the daughter's boyfriend is accused of being behind it. But evidence shows otherwise.