Dr. Mark Sloan has a knack for getting into trouble, negotiating the twists and turns of mysteries and solving crimes with the help of his son, Steve, a homicide detective.
Robert Guillaume was primarily the first guest on the show.
Dr. Mark Slone often undertakes actions which would result in evidence and investigations being compromised. Since he has never been a police officer, these actions could result in cases being dropped or overturned upon appeal. There is no way that a District Attorney would allow Slone and his colleagues to perform the actions that they do in the show.
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