Blood spatters found on a trench coat belonging to a suspect in an unrelated case of armed robbery links a callous killer to the murder of a wealthy pensioner. The police find just a business card and a cigarette butt at the crime scene, but then a detective spots the coat at the suspected robber's house and decides to run blood tests on a hunch. Also today, a detective's dogged approach pays off when he proves that a light aircraft that crashed, injuring three people, was too heavy for take-off.

A blood-spattered hammer is the key to charging the police's prime suspect with a vicious murder. Police believe the man they have in custody is the killer, but with only circumstantial evidence, they need a breakthrough, Fortunately, they receive a mysterious call from the man providing their suspect's alibi. Also today, a drug-dealing gang is brought to its knees when one detective focuses on how the product is packaged to catch the men at the top.