A patient witnesses a woman being murdered in her hotel room across the street through his dentist's office window. Once Barnett is on the case, he suspects that more than just the witness's tooth is being pulled.

While investigating theft at a trucking company Barnet is kidnapped when he gets too close to the truth; it takes all his wits and courage to stay alive and get the authorities involved.

Barnett goes in search of a subway carriage he'd ridden the previous night, but a group of mobsters follows him.

Mike goes after a pair of thieves who specialize in robbing the rooms of hotel guests.

Barnett is called in to oversee the running of a six-day cycling race in which forces are trying to influence the race for their own benefit.

Barnet has his life endangered when a girl claims he has information about a murder; he is confused as to why she would do this till she explains she needed the protection from the mob, rather than protection she has now put two lives in danger.

A bank robbery by a lone gunman results in the murder of two employees. Mike suspects that it wasn't just an ordinary bank holdup--he believes the robber had help from someone on the inside.

Two seemingly innocent young girls hitchhiking are actually a pair of murderous con artists.

A man reports that he's seen a murder through the window of a hotel; there are three possible rooms, each with its own story; Barnett has to figure out who the person murdered was and who may have killed them.

A fur company owner calls Barnett when he realizes his security has been compromised.

Mike Barnett is accused of stealing diamonds by four smugglers and killing their partner. Barnett gets the smugglers to second guess each other. He finally determines who is the killer and thief is.

A group of criminals wire tap an apartment as an experiment to see if they can get some leads to exploit for their operations; after a key is stolen, Barnett becomes involved in tracking down who is responsible and the significance of the key.