There is a scene where the younger man makes an unsuccessful pass at the woman. There is another scene where the woman, fully dressed, starts kissing Frankenstein and lies on top of him while still fully dressed. It cuts away to the next morning where they are on the couch together with their clothes disheveled, obviously after a night of sex, but nothing is shown.

In the play part there was a mention of Hell. I wasn't paying enough attention to recall whether there was any profanity in the office scenes.

Although it's rated TV-14 there are multiple F-words throughout.

First F-WORD 1 minute into show. How did this get a PG-14 rating?

There is some smoking and drinking by the characters who are on stage and in the office scenes, but no one is drunk. There is no drug use involved.