Lt. Columbo investigates a self-proclaimed security expert turned crime show host for the murder of a rival with incriminating evidence of pornography.
Columbo attends the wedding of his nephew, who is also with the LAPD. Suddenly it turns out that the bride is missing, possibly kidnapped. Columbo sets up the investigation to figure out what happened.
When Graham McVeigh kills his brother and frames a mob bookie for the crime, and then kills the bookie and claims self-defense, he finds himself facing trouble from both Columbo and the bookie's superior in the mob.
After a much maligned Hollywood gossip columnist is murdered by her former lover, Columbo tries to find a way to prove he was responsible for the crime.