Colombo 7x5 Page

Dr. Eric Mason (played by Nicol Williamson), a cold and calculating psychologist.

The dogs are actually friendly, which makes their sudden aggression toward a familiar friend suspicious.

Mason invites Hunter to his home while he is allegedly at a clinic. He calls his own house and engages Hunter in a conversation about a film. When he says the word "Rosebud," the dogs brutally attack Hunter, making it look like a tragic accident caused by aggressive pets.

Columbo eventually realizes "Rosebud" is the trigger word and uses it to trap Mason into admitting the dogs were trained as weapons.

However, the final episode of Season 7 is titled . If you meant the 5th episode of the 7th season, here is the content for that case: Columbo Season 7, Episode 5: " How to Dial a Murder " Original Air Date: April 15, 1978