While Steve is staking out hit man Bruno, Mark sees him collapse, and quarantines him for the plague - but while the obnoxious virologist says it's from the rodents aboard his cargo ship, it's Mark who smells a rat. After some digging he finds 3 of the crime family's ladies who had a reason to rub Bruno out (tampering with his asthma medication) - so was it (wo)man or beast who killed Bruno?
Julie Sommars and David Froman, who were both regulars on the series "Matlock" guest star in this one. This was the first of several occurrences when stars of other popular TV shows would make an appearance, especially in the first few seasons to garner viewer interest. Some of the other 'big names' who played a guest role (some more than once) included actors from M*A*S*H*, Emergency! and even Star Trek.
Norman Briggs:
Plague killed thousands, millions of people!
Dr. Mark Sloan:
Yes, but that was before antibiotics.
At the end Steve tells the murderer she'll be put on trial for murdering Bruno Crespi. For some reason, neither Steve and Mark also mentioned she would also be tried for trying to kill Mark, even though it had just happened.
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