Complex sentence: To save his own life, Mushnick tricks the robber into thinking that the money is at the bottom of the plant, and when the robber falls for it, Audrey Jr. eats him.
Split into simpler sentences: To save his own life, Mushnick tricks the robber into thinking that the money is at the bottom of the plant. When the robber falls for it, Audrey Jr. eats him.