Endangered (#3) --
On a mission to rescue neglected animals, zookeeper Iris Oakley runs afoul of murderous drug-manufacturing smugglers. The smart money is not on the guys!
Did Not Survive (#2)--The elephant had means and opportunity for murder, but no motive. Toss in clouded leopards, a stolen zoo van with a strange cargo, and Iris has her hands full. Oh, and she's six months pregnant...
Night Kill:(#1) Iris is abruptly widowed. Only the lions knew what happened and they weren't telling. Or were they?