... because that is the real mystery here. The first scene even shows this guy's obvious pedestrian style that - for the only time in the episode - actually and understandably repulses a young woman sitting in an apartment house lobby.
Anita Bonsal and Fay Allison are roommates in an apartment building with pretty good security. You can only get into the building with a key or by being buzzed in by a resident. Pretty modern security for 1957. In a matter of days Fay is going to marry a wealthy young man that Anita once dated. Anita says she isn't bothered by this, but she obviously is. She says she is going out, but instead she goes up a floor to see the previously mentioned worthless womanizer, Carver Clement. Married not single, not smooth, and definitely not handsome, I can't see what Anita sees in this guy. She gets angry that he won't go out with her and returns home.
Later that night Perry Mason gets a call from a friend of his, Louise Marlow (Frances Bavier). She is Fay's aunt, has come into town for the wedding a day early, and has found the two girls in their beds and unconscious. Perry and Della investigate. It turns out that the two girls are unconscious from an overdose of barbiturates, but that medical intervention arrived in time. That's one mystery. The other mystery is that Carver Clement is found murdered in his apartment with a red lipstick kiss on his forehead, some of Fay's clothes in his closet, and a key to his apartment in Fay's purse. What goes on here? Watch and find out.
Like I said initially, the real mystery here are the multitude of women who are just mad about Carver Clement. Since there are a couple of mysteries here, maybe related and maybe not, I thought this episode was a very good one. And you have Perry doing some things that are out there even for him, such as walking up to women, taking out a handkerchief, and grabbing an imprint of their lips to compare to that one found on Clement's head. Why doesn't Hamilton Burger ever think of these things?