Gift help for a book lover, please!

[aka_anonymous]

I know my flist is filled with book lovers with great taste (buttered you all up enough yet? ^__^), so I thought I'd ask your help. My mom has spent years devouring crappy romance novels and has finally started branching out into series and mystery novels like Harlan Coben's Myron Bolitar series or Judy Gardner's (sp?) FBI series. I want to encourage this trend as much as possible--I hate those Harlequin books. Unfortunately, I have no clue what/who is good in this genre--I'm a fantasy or action/adventure girl all the way.

Suggestions? Pleeeeease?