Murder by Lion (A Rachel Christie Mystery 3) (Rachel Christie Mystery Series)

A well-known heiress and philanthropist commits suicide by jumping into the lion's environment at the zoo. Private investigator Rachel Christie thinks it is suicide, but the woman's husband disagrees and wants Rachel to prove murder and find the murderer. Rachel's homeless friend Joe says that what happened years ago is starting all over again. To stop more innocent people from being tortured and murdered, Rachel races to unravel the crime and the mystery.

A stand-alone mystery, this is number 3 in the series.