Based on the following plot descriptions, all from the first season, it seems there's a pattern here:
Pepper [Angie Dickinson] and Crowley pose as bank employees to nail a particularly vicious gang of bank robbers.
Pepper investigates a school for modeling to which many young runaway girls are attracted.
Pepper and Bill go undercover to catch a rapist/killer who is targeting the wives of patients at a hospital.
Pepper goes undercover as an Airline Stewardess when her snitch is shot before he was able to tell her about the drug deal.
Pepper goes undercover in a woman's prison after a convict is slain who could have helped put away a mobster.
Pepper goes undercover as a nurse in a retirement home to find out who murdered a elderly woman.
Pepper goes undercover as a bored housewife when a blackmailer is found murdered the next likely victim is the suspect's husband.
Pepper goes undercover at a high school as a teacher to hunt down a group of drug pushers.
The deaths of a prominent politician and a nightclub dancer in a car explosion send Pepper to work as a go-go dancer for the club's owner, a one-time poor boy with a powerful yen for the finer things in life.
There's nothing like a '70s cop show. It's like the plots were created through mad libs: "Pepper goes undercover at a ___________."
With real shows like this, who needs Kresky?