The weather is beautiful, work is slow, and her canine colleague could use a walk. What better day for Megan to take Brigit to the Fort Worth Zoo, where they can let loose and witness the law and order of nature unfold? But what begins as a fun field trip turns serious when a pair of rare hyacinth macaws named Fabiana and Fernando goes missing. Is the new custodian, a gentle soul who happens to be an ex-convict, to blame? Or is something far more sinister afoot?