A syndicated advice columnist fears for her life when a psychotic fan doesn't like the results of her counsel and fixates on the columnist as the source of all her problems.

A syndicated advice columnist must fight for her life when a psychotic reader blames her advice for the loss of his job and the failure of his marriage and swears revenge.

Or some such. The point of my suggestion is (per Richiev) to recast "fears for her life" from passive to active "must fight for her life". And to make what is general, "the results of her counsel", specific: "loss of job...failure of his marriage". Also note I changed the psycho to a male -- it might offer more dramatic contrast between the characters.

I suggest that something akin to the 1st two changes (passive--->active; general--->specific) are critical to punching up the logline. The third (female --->male) may or may not be as critical.

fwiw.

I like the premise, although in some ways the psychotic fan seems like the more interesting character.

I would try to give your lead character something to 'do' in the logline because 'fears for her life' is a bit passive. however I like the idea.

Hope that helped, good luck with this!