"Someone has stolen my cheese!" a woman screamed.
The inspector quickly arrived on the scene. (He lived next door.) "Who do you suspect?" he asked.
"The only creatures in the house were a dog, a mouse, a fish, and a hyena," she answered.
"Hmmmmm," the inspector said. "Normally I'd suspect the mouse, but I believe this mystery is more complex than that. I think we should suspect the animal we least suspect."
"The fish?"
"The inspector sighed. "No. I believe he's just a red herring. It must be the hyena."
"I'm sorry!" the hyena cried when confronted. "The mouse's evil twin made me do it. He was blackmailing me. He knew I had a laughing gas habit. I just couldn't stop." He began to cry.
"Oh, Inspector!" the woman gushed. "That WAS complex!"