She's Penna Carstairs. AKA, Rebel.

Named FMX-treme Magazine's sexiest female athlete of the year - there's no rule in extreme sports she hasn't broken, no gender barrier she hasn't demolished.

She's the mysterious stranger I met in a bar, the one I spent one insane, incredible night with. And now I'm screwed. Or rather . . . not screwed.

Because the woman I can't get out of my head is the one woman I can never touch again. I'm Dr. Cruz Delgado - the youngest professor on campus.

And Penelope Carstairs just walked into my class.