This is an Elena Jarvis mystery. From the back:

Elena usually works in Crimes Against Persons. But she's branching out at the moment...into Crimes Against Elephants, to be precise. After Pansy the elephant tramples a trainer, the zoo director insists that someone incited her---after all, she's the sweetest, gentlest elephant he's ever known. Elena can't take the case too seriously at first, especially since she's busy dodging projectiles thrown by the still-enraged elephant. But when evidence indicates that Pansy may indeed be the pawn of a human predator, she's forced to take another look...